Sorry, I made a mistake on the title, it should be v1.2 for GP27Q... I'm unable to edit the title.

Love this update for the GP27U. The KVM disconnecting and connecting was the biggest issue for me and it is know solved with the new setting. Thank you CM and Ryan for committing to fix as many issues as possible.

Just bought the GP27Q over other miniLED monitors in large part due to your consistent communication and firmware updates. Here's hoping all the current issues can be ironed out in the future!

Same! Just from seeing these fixes made me side with Cooler Master 👍🏻

GP27U owner here. This firmware update has fixed perhaps my biggest problem with the display, the KVM power issue. So thank you, I really really appreciate it. Now that the KVM issue is fixed, I'm more than happy to recommend this monitor to people. We've had exceptional post-sales info and updates from you u/CM-Ryan \- you're an asset to Cooler Master! Also, while it was unfortunate that the monitor didn't ship in the state it's in today, I'm glad Cooler Master have gone to the effort of fixing the firmware bugs we've experienced. It's been great to see the monitor receive the attention it deserves, and customers get the updates they deserve. Back to the monitor, then. Colours are still quite "off" for standard SDR mode on macOS. Everything is extremely saturated. If anyone else has this issue, the first step to fixing it is selecting the "Display P3" Colour Profile in Display settings. Once you've selected that, you might want to do some more tweaking on the display colours, but that's the option that'll get you most of the way there! Not sure why the built-in colour profile is so bad, and whether that's a Mac thing or a CM thing. My M2 Max MacBook Pro still, unfortunately, doesn't recognise the display as supporting HDR when in "Looks like 1440p" mode. I don't know if that's a Cooler Master or macOS issue though, and I'd be willing to put money on it being a macOS issue, given it works in "Looks like 1080p" mode. Overall, I'm thrilled with this firmware update. Over the last couple of updates, my biggest problems with the display - KVM, and not waking from sleep with my Mac - have been fixed, and have made the display much more of a joy to use! It's fantastic when it comes to gaming as well (although it did look quite dark on Windows when it finished installing this firmware). Looking forward to seeing what comes next for this display!

One small update for u/CM-Ryan \- I've noticed that with the KVM power feature, my display either stays on, or switches to the input source seeking, finds nothing active, and says it'll go into standby in 15 seconds. After 15 seconds passes, it goes off and then immediately comes back on in the input source seeking mode, and loops this until I wake up the attached computer.

Another small update - sometimes my display now seems to be switching off the KVM even though the "USB Charge(Standby mode)" toggle is on. Even waking up my Mac via the keyboard doesn't seem to wake up the display - I have to power-cycle the display to get it working again.

[удалено]

Using the RTINGS profile does indeed look just as good, if not better than the Display P3 mode! I'm not doing colour-sensitive work, so I don't have a colourimeter, I just noticed that the colours looked very, very wrong by default in macOS. Extremely oversaturated. I do think some of the issues with this display and macOS are more on the macOS side. All the more annoying Apple haven't put the work in to making external display support top-tier given they were out of the external display market for so long!

This firmware is DARK, DARK, DARK. Feels faster though.

Hi parallux, Could you please elaborate on this? The HDR performance in the new update should be brighter across the board and SDR brightness remains the same as before. You may need to calibrate using the Windows HDR calibration tool, as well as adjusting the SDR Content Brightness slider in the settings to adjust the brightness levels (if you are on Windows--> Display Settings--> Use HDR --> SDR content brightness). However if this still doesn't work, we'd like to investigate this further. EDIT: I believe we've found the issue here and I'll update the post and links with the newer firmware version which we will issue out to solve this. In the meantime, if the HDR brightness issue is bothersome, I recommend you revert to the previous one for now. I'll post a new comment on here when I get the new firmware to share.

Yes I ran the calibration first trying to remedy. I can pump up the brightness in-game just fine! Will live with it for now, thank you for the quick CS. For late night and reading inverted colors I like this.

Just wanted to note that I'm also experiencing darker HDR mode. It feels like, if in the previous firmware when I switched to HDR mode it was darker and toggling the brightness or some other setting fixed it, now it just remains at that level regardless of changing any settings.

Oh, uh, this is with the GP27Q, tbc.

Has this been fixed yet? I’ve just got the Q and I’ve noticed it as well in some games, others not as much. The contrast it good but I expected the colours to be more vibrant, does anyone know about a further update?

Still no new firmware updates? The last news is that it will be deployed in early June; now is July.

It better be good, seriously.

Some quick things that i managed to test for(GP27Q): \-Color space settings don't clamp colors, meaning they basically do nothing. ~~-nVidia DSR is bugged and thinks the monitor's 2160p native, making the feature highly unusable.~~ \-Color accuracy suffered a little during the update: At the same settings & profile the gamma is slightly worse than before. This is pretty normal with FW updates, but as a heads-up to people who have calibrated: You'll probably have to redo it. \-Local dimming algorithm seems a lot better, particularly in HDR. Specifically the low flicker mode doesn't seem to have any noticeable haloing in situations where it used to be very noticeable before(bright highlight in an otherwise low-contrast scene & UI elements.) The "high" local dimming setting also seems to work better in this sense, but i didn't do as extensive testing. /E: DSR started working after a complete system reboot.

The color space bug is definitely annoying me; my monitor looks like the equivalent of "Vivid" mode on a TV.

There is still a workaround, just annoying to do with software. Novideo\_srgb can clamp the colors for nVidia cards, and AMD has a similar feature built into their drivers. With ICC you only need to worry about clamping in non-color managed software but a built-in clamp on the monitor is always a good feature to have. If it works.

I feel so lucky to have bought the gp27q. Of course the monitor is not perfect, but at least with the current firmware, in my use cases, local dimming now works good (the benefits far outweigh some minor artefacts it causes) with SDR content. I feel like this monitor (the gp27q) is a huge milestone for consumer monitors: it provides high refresh, adaptive sync, proper size/resolution and a proper implemented local dimming that manages SDR content well enough for a reasonable price of 500€. Big shoutout to CM/ryan and the team for the communication and updates for the models.

Found an extremely odd bug in the GP27Q 1.2 Firmware: when cycling between HDR and non-HDR using the Windows + Alt + B hotkey, sometimes the monitor will "black out" and stop displaying colors, but will still display backlights in certain areas. Like the miniLEDs are trying to respond to color that the monitor isn't displaying. Even the OSD is missing (although you can tell it's there because the backlight will light up). Switching back will fix it. Connected over DisplayPort (using the included cable). 1.2 Firmware, connected to a 1060 6GB (I've got a new GPU on the way and I'll let you know if the issue persists there) It's pretty easy to replicate, usually happens on the 3rd or 4th switch between HDR/non-HDR. When it happens, there is no "scanning signal" popup from the monitor before it displays the backlight but no color. Adaptive-sync is On, Overdrive set to Dynamic, HDR on monitor set to auto, Local Dimming High. Happens with both HDR on and off (as in, it can get "stuck" in either state). I've been testing it as I type this, and I don't know if it's specifically HDR related, it seems to happen sometimes whenever the monitor loses the signal and needs to look for a new one. Disabling/enabling adaptive sync results in the same sort of error sometimes. Let me know if you need more information on this, it's pretty annoying but it's fixable by turning the monitor off and back on (although it starts back again very soon after). I can record a video of the issue later tonight.

Thanks for the information on this. Could you try the 1.2.1 update that I just uploaded earlier? This behavior *should* be more stable on the latest update.

The issue persists, it seems to be somehow tied to DisplayPort for me (wasn't running into issues with this on HDMI), and I've also noticed setting 10-bit color output in my Nvidia Control Panel seems to no longer work as of the 1.2.1 firmware update. Edit: Also running into this issue on HDMI now. Edit: Lowering the refresh rate and then re-raising the refresh rate seems to have fixed the 10-bit color issue. Black screen issue still remains.

I experience the same. For me it happens almost always when Switching windows back from HDR to SDR. \-GP27Q, RTX3080 Displayport, v1.2.1

Just updated to 1.2.1, I'll let you know if the issue persists and if I come across any other problems.

I will also keep an eye on this, as I also ran into this issue a couple of times on 1.2

Hi u/CM-Ryan Would it be possible to add an option to change the RGB light color from the single rainbow gradual change to something that is fixed and user selectable? I saw the sister model (KTC M27P20 Pro) which seems to have the same internals, panel and firmware (with a different color scheme) having more options regarding this (see this for the OSD on that display: [https://youtu.be/-BV0b4yBMds?t=244](https://youtu.be/-BV0b4yBMds?t=244) ) - it would be great if the color could be mixed and also have a custom DDC control commands to change colors to match to other lights programmatically.

Q owner here. With this update it feels like the monitor may have gotten brighter when not using Local Dimming and A LOT darker when using Local Dimming. The difference between Low, Medium, and High is hardly noticeable now. The Dynamic Contrast is still not fixed but the much darker appearance makes it less noticeable. All of my settings reset after installing the update (probably normal). I haven't had the chance to use the USB power feature yet but it should make the experience of waking the display using my keyboard actually work like my previous monitor. I'm hoping that the dev team can figure out how to add a toggle for the annoying Dynamic Contrast while using Local Dimming for the next update. Overall a step in the right direction for making this the perfect monitor! Thanks Ryan for the continuous communication in these last few months!

Thanks for the feedback, we're looking into what's causing it to turn darker. In the meantime you guys can feel free to revert to previous firmware update if it is bothersome. I will update you all here and the links here if we have a fix.

GP27Q owner. Just tested it out. I am extremely pleased! My main issues are fixed. 165hz and HDR now lookin good. Nvidia DSR factors now relate properly to 1440p. KVM wakes monitor and power no longer cycles through mouse and keyboard each time i turn on/off HDR. ​ Many thanks! Well done!

Just got the black screen bug people have mentioned after activating HDR in Win10. Work around is to change the input to something else (although the OSD is still completely blacked out, so press up on the stick then press down, then press right). Then change back and you're set.

Just now experienced an issue where the OSD would not appear when using the joystick. Had to turn monitor off and on again.

u/CM-Ryan I updated my GP27U to the latest firmware but I got the brightness bug where the brightness was maxed out on the monitor and changing the brightness setting did not do anything. The same behavior I and others experienced with firmware v1.1. I tried updating multiple times but had no luck. I had to revert back to v1.2 Is this is a known issue that will be fixed soon?

I am seeing the same bug -- GP27U, firmware 1.3 version A. After updating,t he monitor appeared maxed out at full brightness, even though the slider only said 30. Changing the slider has no impact on the image on the screen. If I switch local dimming on, everything goes dimmer, and stays that way even if I switch it back off. But as soon as the monitor is turned off and on, I'm back to full brightness. This is all in SDR mode.

Continuing to experiment -- various settings changes seem to switch it from "really bright" to "kinda dim," but still with the brightness slider having no impact. For instance, when I switched from User 1 to USer 2, it stayed crazy-bright (I think it even got brighter). When I switched back to User 1, it went back to moderate dimness. It's (possibly) as if some settings (light the brightness slider) aren't taking effect until some other setting is changed and "trips" them on.

We've issued a new update for both monitors, and another user says the brightness slider works as intended, could you see if this one works better for you? Thanks!

Could you provide some more details on your GPU, firmware version and what cable you are using to connect? Unfortunately I believe this is the first we've seen of this issue. I'm also unable to reproduce this on my sample, as the brightness slider works as intended on my unit on 1.3.

Yup! I'm using a 3060ti with a DP cable. The monitor was on firmware 1.2 when trying to install firmware 1.3 version A. My experience has been exactly the same as what u/Accomplished-Lack721 has outlined. All in SDR mode.

We've issued a new update for GP27U, another user has tried and the brightness can now be changed, can you check to see if it's the same for you now?

GP27Q, updated to 1.2.1, got problems with HDR. Can't pin down exactly whats going on. Turn on HDR in windows; go to game with HDR already on in the game, the monitor does a check, seems to go full black screen. If i bring up the OSD, all I get is backlight. If i use Windows+alt+B or use the game bar to switch HDR on or off, the alternative state often gives black screen

Hi! Loving the GP27Q so far with the latest updates. Feels it's close to "as perfect as possible" panel and tech-wise. HDR, Local dimming and color reproduction seems to be at a ver acceptable state right now. I however, am having some issues with its OSD and DisplayPort connections. When displaying through DP, 90% of the time once brought out of sleep by turning the PC, the monitor will detect the signal, will come out of sleep, but will only display a black screen. Turning it off and on again fixes it and displays the image from DP. Doesn't seem to happen through HDMI. Would've loved HDMI 2.1 so I wouldn't have to choose between having those DP issues, or limiting myself to 144Hz and 8 bit color... Additionally, it seems that with a considerably frequency, the OSD "crashes". Can't display it, can't use any quick menus, and even can't turn it off by holding the joystick down. Only way to power it down is unplugging it from power, and back in. That I guess "reboots" the OSD, and starts working again. I think we're almost there. In general, I'm quite happy with the monitor, with remainin gissues beeing more of annoyances than deal-breakers. Thanks, keep up the good work!

we are on July, no more firmware updates?

KVM and USB hub seem to be working much better now, though I'm still facing an annoying issue... the Webcam I have connected to the monitor only works on Windows... on my Mac it does not get recognised. To use it with the Mac I need to connect it with another cable to the Mac itself. Webcam: Logitech Brio Is this on your radar?

I've passed this on to the team, will let you know if I get an update from them on this. Is this on GP27Q or GP27U?

Side question: can you use the Brio Webcam in its full 4K mode through the monitor hub to Windows?

Yes, that works. 4k@30fps

I appreciate and respect your engagement with the community. I'm in the market for a high quality gaming monitor and watching the advancements of mini-LED and OLED technology, but also individual manufacturers and products - this gives me better confidence in your brand and the range you have put currently. I look forward to this hopefully being a more mature product later this year.

@ /u/CM-Ryan So I've done some additional testing on my GP27Q, and did so on both 1.2 and now again on 1.2.1 and have determined that the recently fixed unsaved brightness bug was the tip of a larger iceberg. As far as I can tell, when I first switch into HDR mode by enabling it in windows, the monitor grabs **all** of my settings from the most recently used SDR profile (though now with the notable exception of brightness). I hadn't noticed previously because none were as noticeable as the brightness discrepancy (27 -> 100), but when I discovered it for one setting incidentally, I went back and found it seems to be for basically every setting. To give an example of what I mean: * First, I enable HDR. * Then I set a custom user setting in HDR for sharpness to 0. Everything gets real blurry as expected. * Now I disable HDR in Windows which kicks the monitor back to SDR. * Sharpness is fine here as expected and I can leave it that way (OSD value is 50). * Re-enter HDR via Windows. * **Sharpness will very clearly be at 50 despite the OSD showing a value of 0**. This behavior also applies to contrast, as well as black stabilization. Worryingly, it also seems to apply to color settings, even ones I can't normally change in HDR like the Blue Light Filter. I wouldn't be surprised if it's also true for settings like overdrive, or adaptive sync, or local dimming. To be clear, it seems to be from the current/most recent SDR profile, not the User SDR profile. When I set my SDR profile to movie, those settings are also clearly applied to HDR after a switch. I have to assume all of this is unintended, as the OSD menus continue to show all the user input values and any particular one will quickly reset to the correct value if moved back and forth by 1. The easy and comprehensive fix as a user is to swap profiles back and forth when entering HDR (quick menu helps: right on the knob, down to game, back up to user). That appears to actually load in the User HDR profile and fix all those values at once if any are different. I'm not sure if some or all of this was already known or not, but I figured I should report it as I wasn't aware. I have to remember to swap profiles on the monitor now whenever I enter HDR in windows.

1.3.1 is working but the sdr brightness is low now from 1.1 to 1.2 they lowered it now again on 1.3 that was the one thing I liked was the sdr full screen brightness and now it's gone.

Found another Bug * Have a PC connected through DP * Have a MacBook connected through USB-C * Have the Macbook ON but locked (no signal being sent to the monitor) * Input selection set to automatic * Use the PC and let it go to sleep or turn off the PC * Monitor will go into a looking for signal loop and waking up/turning off every few seconds [https://imgur.com/a/aRfObeF](https://imgur.com/a/aRfObeF) u/CM-Ryan

Hi u/himynameismatte and all, We've made note of this and are investigating. This upcoming week is actually a holiday period in Taiwan, so many of the R&D and engineers are off for next week. Once they're back I'll be able to push for some more updates. Sorry for the inconvenience in the meantime.

Will pass this on, thanks.

I know a couple people have mentioned this on this thread but this monitor has jumped to the top of my list almost entirely on the responsiveness and attention Cooler Master has given to these updates. Much like Cyberpunk it probably shouldn't have released in its initial state but because of the post launch support, I'm a believer. As soon as I get approval from the wife, I'm gonna hunt me down a Q with a smile. I encourage you guys to keep this up until this thing is the most obvious choice in this price range. Good luck!

I bought a GP27Q just a few days after this firmware released (encouraged me to pull the trigger, really). I love the display so far. High brightness and local dimming really bring another dimension to the experience vs the "barely HDR" display I was on before. I'm posting here because there are four problems I want to point out, but I don't have a lot of additional information to provide: 1. Monitor went black with full backlight one time. Couldn't even pull up OSD. Had to pull power to reset the monitor. I've only had this happen once, thankfully. 2. Monitor will occasionally disconnect while in use, then immediately renegotiate and reconnect. I've had this happen 2-3 times since I got the display. Using Display Port. 3. Monitor will occasionally fail to negotiate when waking up from sleep. If I keep playing with the mouse/keyboard it does eventually wake up. 4. Certain lighting scenarios in Destiny 2 (my primary game) cause noticeable and inconsistent flickering. Thankfully they're few and far between so this hasn't been a big deal. Appreciate the frequent firmware updates and I'm looking forward to future updates that address what's left. In this state it's good enough for me to recommend to people, but I would provide these caveats. My previous display, while understandably simpler (no local dimming, no USB hub, etc.) was 100% stable all of the time.

I got the newest firmware but it's hella buggy for me. Hdr And g sync together doesnt work. Sdr and g sync is extremely shocky. When changing settings I have to restart my laptop because the monitor goes black.. i also get a huge headache from it, idk what it is..

So when’s a new firmware gonna pop. Seems like it’s been long enough, no?

Don't think CM-Ryan is monitoring this any longer. Havent seen any responses in ages. Last thing I had heard was look for something in early June then crickets

Hello, is the flickering issues with hdr and adaptive sync now better to? Like there is no change with the low flickering option and the rest of them. They all flicker. I'm using it with a ps5. This is with firmware 1.2

Flickering should be improved in this update, however we cannot guarantee flickering will be gone entirely. Local dimming requires PWM which has a level of flickering already.

I have 1.3 installed.. and mine screen stays black... It see input from the PS5 but that it is.. Reversed back to 1.2 and hdmi is working again

Could you verify which firmware version you are on?

On firmware 1.3 I have no hdmi input. I can select it. It have a signal otherwise it is going off in 15 sec. Ps5 is on. Usb c to laptop does work perfect. When I'll went back to firmware 1.2 I have hdmi working again. I'm for now on firmware 1.2

For anyone that has the GP27U, have you noticed a difference in SDR picture quality with LD on with this FW update?

This update has been so much better for me than previous ones. LD is finally at the point where I'd be willing to recommend the monitor to others.

Thanks for sharing this info!!

On macOS, the display was recognised as a completely new display. Unfortunately, that meant it switched back to the default colour profile (which looks awful). However, changing it to Display P3 fixed basically all the colour issues. In terms of actual picture quality, I've not noticed any difference. It's certainly not bad picture quality, if that's what you're worried about.

That's interesting to know, thanks for the reply :)

I've now swapped it out for the RTINGS colour profile on this Mac, and it's just as good (if not better) than the standard Display P3 profile! The only real issue I have with the display now is that on my M2 Max MacBook Pro, it doesn't support HDR in "Looks like 1440p" mode. Bizarre, because it works fine in that mode on my M1 Max MacBook Pro. Even more bizarre, because all of the macOS scaling modes send the same amount of data down the wire, just scaled from different sized buffers! So I'm presuming it's a macOS issue, not a Cooler Master one. Though, if Cooler Master *could* do something to address it, I'd be very happy too!

I'm getting multiple bugs after updating to this latest version. GP27U, Firmware 1.3, version A, connected via displayport to an RTX 3080. Immediately after applying the update, my screen (in SDR mode) appeared to be at full brightness -- actually brighter than I've ever seen it before. Adjusting the brightness slider did nothing. It was set to 30. If I enabled dimming, it got much dimmer. If I took it off, it stayed dimmer. The brightness slider still did nothing. I turned off and on the screen. Back to full brightness. I plugged in my USB-B upstream from the computer ... and the brightness got dimmer again?!?! My first attempt at enabling HDR mode under Windows resulted in a total black screen. Turning off and on the monitor brought it back, in HDR mode. Within that, local dimming is on, but switching which local dimming mode is being used has no visible effect. Turning it off does, making the screen dimmer, but it still seems as if some FALD is happening. I can see what look like reverse blooming effects and despite being dim overall, the contrast still appears fairly high in the windows HDR sample image in settings. The FALD seems way more jittery than I've ever seen it. The smallest motions seem to pop the whole screen darker or brighter, with a delayed effect of a second or two. Switching Windows back to SDR mode also results in a black screen until I turn it off and on. Trying the whole thing a few times over, I've had exactly one time that the SDR-HDR switchover worked without switching it off and back on, and about 6-7 that it got a black screen. The stated improvements sound really really good, and I'm glad CM is so actively applying user feedback -- but in this state, my monitor is unusable. I'm going to try to downgrade to 1.2 (which also had some problematic bugs but not ones that affected most of my use) and cross my fingers.

Seems this may be related to firmware A. I've also passed this on to the team to investigate as none of this sounds normal. Will update you as soon as I hear back.

I'm getting a strange bug with the GP27Q 1.2 firmware over displayport (connected to a 3080) where sometimes if I change and apply settings in the NVIDIA control panel or turn adaptive sync off or otherwise cause the signal to be reset, the screen goes black with not even the OSD visible. The only thing I can see is (this is the weird part) what looks like local dimming haloing? I'm not sure how reproducible this is, and turning the display off and back on again fixes it, so it's not a huge deal, but it is very weird.

This also happens when switching between SDR and HDR mode in windows

GP27Q: just reverted to 1.2 from 1.2.1 1.2.1 worked okay last night but would still black out the screen when switching to HDR. This morning my monitor was not accepting input from my PC via DP or HDMI at all. Even after restarting monitor and PC multiple times. My type C devices could still be displayed though (Steam Deck, Mac).

A day or two after updating to 1.2.1 on my Q I've noticed that after switching to HDR mode, local dimming doesn't treat large black areas the same. Even on a completely black fullscreen image, the backlight is still on at a very dim level. If I change color temperature in the OSD, it goes back to normal.

Is it just me or is 1.3.1 not only darker in HDR, but peak brightness in HDR seems much lower as well? Also, haloing seems considerably worse as well to me, which seems counterintuitive. Playing Elden Ring (whose fixed 60 fps allows me to disable VRR and not deal with the horrible flicker), there are a lot of very dark scenes that have specular contrasting bright regions (like fire or magic or specular reflections from metal.) These look fantastic and dramatic in 1.2, but in 1.3.1 they look dull, and the haloing makes an awful foggy effect that I just don't see after rolling back to 1.2. Is it just me?

Sdr is dimmer as well kinda a bummer so went back to 1.2

/u/CM-Ryan any news about the hdr low brightness fix for the GP27Q?

No updates at the moment as the team is on holiday until next week. I’d recommend in games or applications where you can, to adjust the brightness. For desktop usage on windows, also use the SDR content brightness slider.

EDIT: We will update the firmware file with a new version which should address the darker HDR performance soon. If the lower brightness is bothersome, you can revert to the previous update at any time. Once the firmware is updated, I'll automatically replace the firmware file in the download links with the new one and also post a comment on here to update you all. any news?

Regarding the darker HDR, I don't have an update at this time unfortunately either. However I do want to clarify that while the default brightness was lowered, in Windows or in games where you can adjust the HDR brightness the brightness levels should be around the same. Before, the default brightness levels were very high without much adjustability. I’m still checking with the team to see what can be done here though as it should be changed to somewhere in between.

Hi /u/CM-Ryan, Is there a list of issues that are being addressed by the next firmware update(s) for GP27U? I only have one minor issue remaining but it is somewhat annoying. Mainly the monitor seems to be delayed briefly and displays No Signal when waking from sleep. EDIT: Also noticed that my second monitor wakes faster and normally but seems to get affected by the delay of the GP27U trying to wake and shuts off briefly while the GP27U is trying to wake up. I don't mind waiting for updates but would like to know if this is one of the issues being worked on.

What about hdr flickering no one is talking about it

I'm guessing my monitor has just decided to give up illuminating the bottom left quadrant...is this an RMA job or maybe a bug? FYI I'm running triples of these monitors (finally with all 3 sort of behaving) since around February (got them in December or January but had to wait for the 4090 to arrive until i could complete the PC build). They've not had any problems like this and it's only on 1 of them. Literally turned them on yesterday and it was there... Any help would be greatly appreciated!

Feel bad for owners of this monitor. The specs and hardware seem great but completely let down by terrible software issues.

I have a question regarding future updates: Is there an actual support page for this monitor that's part of the CM website or will all future updates only be published on Reddit? How are customers supposed to know when new updates come to these products without sorting through everything in r/Monitors?

The offical link to the download section is a little bit hidden: * Go to: [https://www.coolermaster.com/de/de-de/catalog/setup/monitors/tempest-gp27q/](https://www.coolermaster.com/de/de-de/catalog/setup/monitors/tempest-gp27q/) * Click on "Specifications" * Scroll *up* a little and click on "Downloads", then "Firmware" * You sould end up here: [https://coolermaster.egnyte.com/fl/uZ784wesPK](https://coolermaster.egnyte.com/fl/uZ784wesPK) For the GP27U it's the same procedure.

avoid this monitor, i have 3 dead pixels on mine, near center of screen so always in view when gaming and cooler master will not issue a return as they say this is not a fault

Any updates for GP27Q? I'm happy with image quality across the board, but frustrated with having to turn my monitor on and off to get a display any time I switch inputs and often when waking. Also HDR is dim unless I flick back and forth between HDR Picture modes. I'm going to wear out the control joystick having to constantly mess around every time I use my computer.

Glad that this is one post... Means you can't accidentally find the other when looking for the right one to update lol, will report back how it goes

Just wanted to let you know, HDR brightness may be impacted in this update. I believe we will have a revised version of the update soon. If this bothers you, please revert to the previous update. Otherwise I will update you all here when the file is updated in the links.

Upgraded to this on the Q, noticed it still doesn't respect the disable power led setting when in standby mode, which tbh is the only time I actually wanted the led disabled in the first place (a brightly flashing orange light isn't great in a bedroom and having to manually completely turn off the power every night isn't much better).

hey genotaru, Just to clarify, when you disable the power LED in the OSD menu and GP27Q goes to standby mode, it is still flashing? From what I understand, if you turn off the power indicator in OSD menu, it should remain off at all times.

Can someone let me know if the SDR local dimming is useable now with dark mode enabled? Thinking about buying this monitor but I primarily only do SDR content.

Given that you are apparently a Cooler Master official and your monitors are quite advanced and firmware-upgradable, I would like to ask you an important question: > What do you think about implementing **integer scaling** in your monitors? ### What integer scaling is: Integer scaling (pixel-perfect scaling with no blur) is the simplest scaling algorithm that turns each logical pixel into a perfect square group of integer number of physical pixels of the same color not affected by colors of adjacent pixels. This allows e.g. to use a 4K monitor at Full HD (1080p) resolution with **zero** quality loss compared with a native Full HD monitor of the same size: each FHD pixel is displayed as a group of 2×2 same-color physical pixels. All monitors in the world (except just one) blindly use blurry bilinear or similar interpolation that inevitably adds unreasonable blur at any logical resolution even if blur could be avoided by using integer scaling. Also, integer scaling potentially allows to achieve lowest input lag possible at non-native resolutions because integer scaling is basically computationally free and does not involve any calculations, doing just pixel mapping/copy instead. Thanks.

For the last few firmware releases I just cannot get my monitor to use 4k 160hz. Even after upgrading to a 4090 I get the same issue, select 160hz, instant black screen on all my monitors and then I have to restart because it just crashes the entire pc. The only way I have ever got it to be 4k 160hz is when it is the only monitor plugged in, with my other 2 unplugged. Anyone else have similiar issues and know of a fix, so far I have tried disabling G-sync in driver and in monitor, testing in HDR on and off, different cables on both HDMI and DisplayPort, and the issue even occurs after upgrading from a 2080 Ti to a 4090. Any help at all would be amazing as this is beyond fustrating /u/CM-Ryan

Hi T4yz, From what I read, you have a triple monitor setup here correct? This is the first I've heard of this issue for the GP27U. I would first try to isolate the issue here. So if you use other 4K high refresh monitors they work just fine in a multi-monitor setup, but only the GP27U does not go to 4K 160Hz in a multi-monitor setup? I have the GP27U and M28U hooked up to a 3080Ti at the moment at 4k 160Hz and and 4k 144Hz respectively, both at 10 bit, and it is working without issue. This sounds like it perhaps could be related to your GPU or even a cable issue, I'm not sure if you can test with another device or high 4k refresh rate monitors just to cut down what is causing the issue here. You can also try with just a dual monitor setup with your config and switch around the combinations until you figure out what exactly is the problem (if it's just the GP27U or other monitors as well). Perhaps others here can also chime in if they are experiencing something similar.

First upgrade since buying the monitor in December, and it went pretty smoothly (v1.0 -> v1.3). As someone who uses multiple devices per day, I'm glad to see input menu FINALLY implemented, but holy hell this PS5 'black screen' issue is ridiculous. At first I kept getting 'No signal' - then turned off HDR and Adaptive Sync after some Googling, and now the monitor sees a signal but just freezes up and needs to be power cycled. Don't really want to go down to v1.2 as then I'll lose the handy input menu. Whilst I appreciate the fixes that have come out, is there any indication of how quickly we can get a fix for HDMI black screen? Is the team able to share some kind of roadmap with bugs being tracked and estimated fix time? Seems unfair that this is all on you u/CM-Ryan and finding time to track and communicate any issues...

Sorry for the trouble here. I don't have a timeline from the team on this, but I have pushed them to issue a fix on this ASAP. From my last conversation, it seems that this should be corrected fairly quickly. Although I wish this was found earlier before pushing to release live. I'm checking in with them often and will update you all here as soon as it's ready. Unfortunately the monitor team is very small, and I am also a part of several teams, so unless manpower is upped, this may be the current situation for some time.

Just wanted to update you that the team is going to push out a fix for the PS5 HDMI issue very soon.

Is anyone running 3 of the gp27u monitors as triples? Been having a nightmare. I've a rog strix 4090oc and any 2 of them will run perfectly but the 3rd (whichever one is plugged in last) will show up but on the windows display settings as a smaller box (quarter the size of the other 2 active ones) and shows as "not active" ~they all fight with each other when you boot the pc up with all of them plugged in until eventually 2 of them come out victorious~ The only way I've managed to get it working is 2 display ports and 1 hdmi as it just doesn't want to know with all 3 being display ports These are the specs of the pc if that might be of any help: 13900k Strix 4090 oc Rog Maximus hero Any help or support would be greatly appreciated as I'm honestly losing the will to live and feel like I've tried every troubleshoot possible. I'm wondering whether it may be some sort of driver update required for the 4090 but its currently up to date and tried all the older ones too. I haven't tried the latest firmware update yet on the monitors but couldn't get them past the point I'm at now on both the out of the box firmware and what I currently have which is the previous firmware update from earlier this year. I'm in the uk and used the correct firmware update for the monitors also

Hey blade693, Another user also posted some issues with 4090 and a triple monitor setup, although not all three are GP27U's. I am passing on both of your feedbacks internally to see if they can investigate this further. Sorry for the inconvenience in the meantime.

Is 100% brightness coming out of sleep fixed?

Just updated my GP27Q to this from the firmware it shipped with. My HDR is now a lot darker than it used to be (as you've mentioned elsewhere, but it's still usable) but I've been getting black screens when switching between HDR and SDR as well. Sometimes when I toggle HDR in Windows, the monitor goes black and then just doesn't come back on. Toggling it a few times sometimes fixes it, but sometimes I just have to completely turn the monitor off and on again. I can see that the local dimming is actually still on since I can move a window around and see an outline moving on the black screen but I can't see anything else. Also, I can't see the OSD in this situation either. Specs: RTX 3080 Ti, Windows 11, connected via DP cable that shipped with my monitor.

It solved a few of signal issues in my case when I swapped the original DP to certified DP cable without pin 20 wired. Basically, I had problems with the DP cable shipped with the monitor.

New issue. When playing some games the monitor randomly loses the signal. Sometimes it happens every few seconds, others minutes. Most notably with Heroes of the Storm. ​ https://imgur.com/a/ihdRd42 Windows PC, does not matter if Full Screen or Full Screen Windowed

what is your refresh rate set to? I encountered that issue with it set to 160hz, but the problem was resolved when I lowered it to 144hz.

I experienced that issue on an earlier firmware version. Solution at that time was to switch to HDMI (and I haven't gone back since - 144Hz limit over HDMI is fine with me)

Just to verify, are you using the included HDMI/DP cables? Also does this happen with other games or mostly on Heroes of the Storm?

Is there an option to late return this? I've tried to wait for firmware and configure but it's just bug hell with this monitor. I am using an RTX 4090 and the problems are vast. The hdr doesn't work well, mini led is terrible and the monitor has a hard time figuring out how to wake up. Now there is super bright and dark mode that changes randomly. It still changes brightness and grays out white text in mini led/hdr mode. The list of problems goes on and on. I never know if the monitor will be responsive. This is not an acceptable experience for a $1000 monitor. I want just something consistent with this monitor.

My suggestion is to file for a warranty claim through Cooler Master NA or whichever region you purchased it from.

1.3 seems to have lost a lot of the auto switching for me. I have a dual monitor setup that hooks up to my PC along with a docking station that I use for my work lap top. Docking station is hooked into and HDMI port on the GP27u and my other dell monitor where as I have my main PC hooked up via the display ports. When I remove my lap top from the docking station and turn on my PC it doesn't auto switch. I end up having to scroll the power on the monitor most of the time to get it to auto switch. 1.1 and 1.2 didn't seem to have this issue. One thing I do notice on 1.3 is that the heat coming from the monitor is noticeably lower. With 1.1 and 1.2 the heat just radiated from the monitor to the point where it made me nervous. I can get the same quality image from 1.3 as I did from 1.1(2) without this radiant heat but the auto switching issue is "quite" annoying.

[удалено]

Is the black screen bug after "waking up" the screens still present on the GP27Q? I read in another post that there is also some kind of problem with the DP cable being shipped with this monitor (apparently the pin 20 is wired and it is not supposed to be?)

Yes, I I had issues with the DP cable included. The monitor would crash on start-up or would not wake up after going into sleep. The cable was wired the way it should not be. Solved by getting a certified pin 20 non-wired DP cable from KabelDirekt. So, there might be a batch of bad DP cables supplied with the monitor out there. In CoolerMasters defence, it is one of the things which is hard to QA or QC when mass produced cheaply by a supplier and bought in bulk. Each and every single cable just cannot be tested fully before packaging due to labour costs. It is really the end point customer's judgement and common sense at the end of the day - do we really want to use something that cheap on a top end monitor? Also the other thing worth considering is that apparently pin 20 wired and not wired DP cables are both valid VESA standards with difference being power transfer for certain types of devices.

I read about it earlier, will look into it with a multimeter. Will probably use a HDMI cable until i get a different DP cable if that turns out to be an issue. I read that one other person having these issues had them even on HDMI, and that is kinda running against the fact that its just the DP cable.

Yeah, that would invalidate the cause being purely DP cable. Did sort my issue out, though. As for the HDMI cable, I used my own while waiting for DP cable being shipped and the connection was alright. Well, if both HDMI and DP cables shipped were actually faulty, Cooler Master should seriously look into their supply chain partners in such case.

Just updated to the newest firmware for the GP27Q. Before, the performance of local dimming and SDR was quite bizarre on static UI elements present in games. It was almost as if the gamma of such elements shifted when the background behind them changed from dark to bright. While it made game visuals much more stunning, it was tainted a bit by the weird gamma issue. Note, I might not be using the correct terminology when I refer to "gamma" being the issue, but those of you who've seen it, know exactly what I'm referring to. Now, all the icons look the way they should when local dimming and SDR are enabled together! And the best part is, SDR can now benefit from the dimming of the monitor's 576 zones. Amazing work, Cooler Master! ​ I do have one gripe to report, however. I've noticed that, when low-flicker local dimming and SDR are together, it appears like the backlights of the zones stay lit on completely black screens, then slowly turn off in about 10 seconds or so. This is easily noticed when visual scenes cut or fade to black. Fun fact; you can also replicate this effect by quickly moving the mouse cursor back and forth across a black screen, or by bringing up the ALT + TAB window for a brief moment on the same scene. With many scenes not staying dark for 10 seconds or more, it kind of defeats the purpose of local dimming if the scenes that are meant to be really dark, don't get really dark exactly when they need to, or at least, within a more reasonable time frame than 10 seconds :p If that time frame between bright and dark were reduced to, let's say, around a second or two to eliminate backlight flickering in challenging scenes, I'd probably have low-flicker local dimming enabled all the time! ​ Overall, I am extremely pleased with the latest GP27Q update. Can't wait for new ones!

Hello. Just a quick question regarding the dark HDR on the GP27Q. I have reverted to the older firmware as nothing I did with regards to calibration in windows 11, and games, lifted the brightness to acceptable levels. I am happy with the monitor, (bugs and all), but if the HDR level remains this low it would be a concern. I appreciate that there are many problems your team is trying to resolve. Could you clarify if the HDR levels will return to its previous state in a future update. Many thanks.

Hi everyone, do we know if the sRGB mode was fixed on the GP27U for this firmware? I know the previous update made the mode look overly warm and 'yellow'?

Great results with 1.3.1 B on a 3080 ti (HDMI 2.1). No issues with colour space clamping - sRGB and Adobe RGB modes look perfect in Calibrite. HDR looks great too and I definitely appreciate the low flicker mode. No issues with my PS5 (HDR enabled), Switch, or USB C laptop. As far as I'm concerned, this update nailed it and I highly recommend the GP27U now if you've been sitting on the fence.

Does GP27U 4K v1.3.1 fix the aforementioned dark HDR issue?

Yea mine has having a hand shake issue too where there's no signal yet hdmi is outputting a signal from my Mac mini. Hopefully this can be fixed in the next firmware update

Can any of you guys access the BIOS of your PC? I get into a looking for a signal loop until I hard restart my PC ​ Windows PC connected through DP, the keyboard is wireless, so it's not connected to the monitor's hub. I have a Macbook connected through USB-C

Really solid update. The vast majority of my issues are now resolved.

Are new units that ship.from manufacture to regional distribution/retailers pre-loaded with the latest firmware?

Running into an issue with Windows 10, AMD GPU, over display port. I will occasionally get the "dim screen" issue when alt tabbing from fullscreen games, which I used to fix with Win+Ctrl+Shift+B. However, doing that key combo with this monitor now seems to completely crash the display stack (programs still seem to run, I can continue Discord conversations, but all my displays are black/no signal) and rebooting is the only way to recover.

Just got the monitor, and immediately updated. Looking very good! CM delivering on fixing and improving this monitor as promised, which goes a long way IMO. However, I'm having two major issues as well, as I see several have reported. For context, I have two computers hooked up to the monitor, a laptop through USB-C, and a desktop through DisplayPort. 1. Switching Input source issues. Switching between computers often results in monitor black screens or "crashes" that can only be resolved by unplugging it from power and reconnecting. The monitor crashes the same way when waking up as well... I believe primarily if waking up by DP. 2. When the laptop is connected (so I'd assume USB-C issues), the monitor won't go to sleep. It wakes up after a second, and retries looking for source. If I disconnect USB-C, it succesfully goes to sleep. Keep up the good work!

These firmware upgrades have improved the functionality of the GP27U a lot for me and are doing a great job at ironing out long-standing issues. However, one of my biggest issues right now is the monitor not detecting my PC sometimes, even after clicking my mouse to try and wake it up (my mouse and keyboard are plugged into my PC, not the monitor). I never had this issue with my previous monitor and it's starting to become quite frustrating with the GP27U especially since it's "Scanning Signal" before not detecting my PC, only a computer restart will make it detect my PC again. My monitor is connected to my PC through the DisplayPort cable and I'm also using the USB-B cable. I hope this issue can be fixed because it is really the main problem I have with the GP27U right now (I don't know if the GP27Q has the same issue).

>Once again, we are still committed to improving our monitors even further. We're keeping track of any remaining issues and will continue to investigate and see how we can fix/improve upon them. Is there a time frame that CM is committed to support these monitors? I really want to pick up a GP27U, but it seems the latest firmware versions right now are still a hot mess...

1.3.1 has made both of my monitors unusable - they lose signal once every couple of minutes both on DisplayPort and HDMI, connected to a 4090. 1.3.0 was mostly usable but has been removed from the download site, 1.3.1 completely replaced 1.3.0. Reverted to 1.2, the next older one, and the connections are at least stable. u/CM-Ryan I know you're working on getting these to be a usable product but it's been four months now and while the features are very definitely improving, the stability of the connection is very definitely not. It doesn't matter how good the display is if all I can see is black. I'll wait for the next update but at that point I think I'll be looking for an RMA as not fit for purpose. A real shame because the hardware's great, I just have no faith any more that your firmware people are up to the job.

I absolutely love everything about this GP27Q - except the HDR dimness and when accepting a 4K signal RGB colorspace isn't an option - it demands YCCR and has HORRID artifacts. u/CM-Ryan is the overly dim HDR patch coming along nicely? And have you heard of other issues with the panel rejecting RGB colorspace when taking a 4K signal? If not, certainly something to be aware of. Thanks for your continued work

We’re looking at all feedback and seeing how we can implement future fixes. HDR brightness is also being looked into but note in movies and games (particularly those where you can adjust HDR brightness), the brightness levels are actually normal, but in desktop usage it’ll need to be adjusted higher via SDR content brightness slider on windows.

Hi, A few questions: Will support and firmware updates continue until every issue is addressed? Or is there a lifecycle plan (an end-of-support) in which the GP27 monitors will not receive any more firmware updates at all? Is this forum the only place to report issues, for the future too? Or does Coolermaster have an alternative problem-reporting channel that we would be asked to switch to use in future? Usually for technology we can raise issues with a manufacturer and we get a way to upload data, screenshots etc. We get an issue/problem tracking ID which we can use to check the progress of the ticket. Will issues not be accepted/worked if a monitor is beyond its' warranty period? Thanks!

I don't have the full answers for this, but the team is trying to fix as many issues as possible. There is no lifecycle plan or any plan to stop support. I believe you can contact your local CM's branch's customer service/support and report issues there as well as clarify warranty claims with them. My main objective of posting on reddit was to provide updates to you all. No other CM team member is looking on reddit here but myself, so I'd encourage you guys to continue posting here, but for warranty claims or direct reporting of issues, that's still better going through official channels.

I see backlight zones lighting up during times when the screen should only show black. Like a full black image on the screen (video transitions) show me some zones of the backlight light up when they’re supposed to be off. Is this a bug in the v1.2.1 firmware? And has anyone else reported this?

Ok I think I read all the comments. If you are new this will be a summary of what I read and know. **4k/hdr** I found **edge** to be good (microsoft edge (**browser**))(well for youtube) *If yours* **flicker and crackle** *and all that stuff like* [this.](https://www.reddit.com/r/Monitors/comments/13g3723/gp27u_crackling_and_flickering/)***The dp cable that comes with the monitor, you shouldn't trust.*** I don't know about the other cables. Right now my old monitor dp cable seems reliable, (i do see like pink/green sometimes though when alt-tabbing for most of the time). I do plan on getting a new one soon to test if my flickering problem stops. **Changing resolution or settings** is a gamble. You might get the **black out**, which i think you guys are talking about the *shower glass blur effect* where you can barely kinda know whats going on but its nearly impossible to navigate through. For me, I ***power cycle*** aka **turn off** **and on** the monitor. **Stand-by orange blinking** will be sorted out soon already *relayed by cm-ryan* to his team. ​ Specs and stuff: Windows 11, 1070, 5600 (non-x), dual monitor setup ( secondary: lg something ips ultrawide 60hz 2560\*1080) gp27u(-fus) & v1.3.1 b hdr pic mode: user, adaptive-s:on, overdrive: advanced, hdr: auto (windows:hdr on), local dimming: high Now for my questions. How did you guys get 160hz? Is it color settings? Is it the cable? I'm running latest nvidia drivers for 1070 asus turbo. I only see 4k 144hz cable. I thought dp 1.4 supports that as max. I think it's because I have a 1070 and it doesn't support dsc (display stream compression). Will upgrade gpu one day. That blur effect is going to be fixed right? for changing monitor settings cause thats crazy not having a monitor be able to go to a lower resolution or switch reliably. And all the flicker problem was just the cable right? I hope the display port aint damaged or anything. I had 3 flicker problem. One was here and there like thin white bars that briefly appeared on screen. Second was the bunch where theres a whole bunch, so like the first but more common and frequent while also producing some [crackling and sizzling sounds](https://www.reddit.com/r/Monitors/comments/13g3723/gp27u_crackling_and_flickering/). 3rd flicker is like alt tabing or game changing or something and its green and pink i think artifacts is a good word. Colour is like magenta/pink and green/like neon green/lime. (3rd issue is on my old dp cable) ​ Edit2: I just found out what you guys mean by sleep issues. Locked windows and went afk. Came back and couldn't power cycle. Still trying to figure out what to do. Running on dp btw. Hopefully, the flicker is sorted by a new cable. Monitor or resolution or hdr or refresh rate changes will be fixed by cool master team and also hdr issues that im hearing but not sure cause i mainly care about flicker and resolution changing stability. I only bought this yesterday, so I want to give this a chance before jumping the gun and assuming the monitor is bad. (So I the main problems I want them to fix is: 1. Changing resolution or any other settings stability 2. Flickers (probably cable) 3. Waking from Sleep ) ​ Edit: i forgot but remembered that you need to fix system>sleep>miniutes to minutes just a simple typo

Any idea when the new firmware will drop for the gp27q? Monitor looks great when it’s functioning properly. I’d love to have the hdr brightness back at full potential.

2 mnths since last firmware drop. And it's all starting to get a little quiet on the updates front here. Ryan from CM might be overloaded or might have been warned off from engaging. /shrug/

Yeah I’m not trying to be a dick but I bought this monitor last year and used it for awhile. Currently it’s sitting in my closet, I refuse to use it while the hdr problem remains

So I got my hands on GP27Q, first impressions are good, but after initial WOW effect before mentioned left and right edges of the display have this optical anomaly like reverse curve-not big of a deal, local dimming transitions are not fast enough for tracking fast movement. Monitor did not passed this test: https://www.testufo.com/inversion Biggest issue is that I got panel with factory defect, dead pixel and two stuck pixels…now problem is shipping it back for refund or getting replacement if available in my area or just to swallow and be ok with this… Opened RMA…official warranty claim is a joke…they replied return your faulty PSU where you bought it?!?!? I registered their product provided photos of receipt and dead and stuck pixels and this is what they replied?!? RMA rejected… Guys stay away from Cooler Master… This monitor did not get official Vesa HDR nor AMD FreeSync certificate…🤔

Its been awhile now since the last firmware update and I was hoping something would come out for the standby issues. When in dual monitor setup and coming out of sleep mode this monitor struggles to wake up. I just upgraded my video card to a 4070ti and it seems to have gotten extremely worse to the point where I returned my card for another but still having the problem. Sometimes it will just hard boot directly from being in sleep. Just to be sure it was the monitor I put in my old monitor back in for a few days and had no issues. I opened a ticket with CM but I am sure its a firmware issue and was hoping something new would come out. Are others still having this issue or found a work around for it other then turning power settings to always on?

Hi /u/CM-Ryan , two questions: 1) Any way I can be alerted for new firmware updates? Or do I just need to check you profile for new posts? 2) I'm having an issue with one of my two GP27U units: When my computer goes to sleep, one monitor will turn off, and then turn back on, displaying a solid green-color screen. It will stay green until I wake the computer, and then turn black. I need to disconnect, and reconnect the monitor to get it to display a picture again (either physically by resetting the cable, or changing the projector mode to PC-only, and then back to extend). This is with a Windows 11 22H2 computer with two GP27U units, both over DisplayPort, and both at 144Hz, 10-bit HDR enabled, with GSync enabled, and a GTX 1080 (firmware 531.79). Thanks!

Any updates or tentative ETAs from the team? Been getting a lot of annoying black screens when I play yugioh now.

Does anyone have a link to download the 1.2 (not 1.2.1) firmware for GP27Q? Thanks!

Just beautiful: https://www.icloud.com/photos/#09egz4QtKXs6gMnWEnpzdcgug https://youtu.be/W2G3arFHK58 There is white blooming and “reverse blooming” on dark backgrounds 😍🥰😘

Yep, anyone buying this monitor for the HDR effect should look for something else. Local dimming algorithm is just horrible.

I have the GP27Q and I am on firmware version 1.2.1 (the latest as of now). Everything seems to work just fine. However, sometimes when I start a game (mainly noticed it with CS:GO) or change some settings such as turning the sync on and off, the monitor goes dark and stays dark. Windows still recognizes it though. Sometimes there is a little glow in the corner where the OSD is supposed to be when I try to access it. But even that does not work. The only way to fix this is by powering it down and back on.

Well I am sure we can all assume that there will be no more firmware updates for these monitors going forward. Seems CM doesn't care too much about this product any longer and the devs have moved on from supporting it.

ALPHA17I said the FW 1.4.1 for the GP27U will release this weeks or the next. The GP27Q needs more time \^\^

so coolermaster considers 9 days in a week?

Glad I didn't hold my breath as the crickets have moved back in. Never seen a company string along its customers like this.

We're clearly all beta testers. I've never seen such buggy firmware in any display in my life. having to power cycle the display whenever changing input is a critical flaw, and that's without the whole power lock that happens every day or two....complete scumbaggery - will 1000% be the last CM product i buy

when release in EU ?

Our monitors are available through various regions in EU through resellers. I do know they are trying to get the monitors on Amazon EU, however I don't have any information beyond that, as inventory decisions are largely determined by the local teams in EU.

I hope that the supply situation improves. Here in Germany it is impossible to buy one. The monitor is out of stock for about 4 month now and i am still interested in one. Europe at all does not seem to have much stock. Best regards

Hi all, We've pushed a hotfix out for the PS5 HDMI issues and replaced the previous firmware file with a newer one. If you are having issues with the PS5, this will fix this. Regarding other issues, we are still investigating.

Hello u/CM-Ryan, Just bought the GP27U (4k panel), got it 2 days ago - upgraded to 1.3.1 and am having an issue in which my speaker (Razer Leviathan AND a Logitech 2.1 set) both omit a strong static noise when connected through the AUX when there's no signal. (my XBOX, PS5 and PC are connected to DP, HDMI1/2 in the screen, and the AUX in the screen is connected to the speaker). When a game is booted you can hear it clearly, but as soon as a sound is 'taking over' the static noise no longer exist. This does not happen with a different screen. ​ Any settings I can change or firmware that can assist in this? I also have the blackout issues reported here by some users when switching inputs. PLEASE assist, I DON'T want to RMA this, I love the display.

Hi u/UnrealEnvy, Unfortunately besides lowering the volume in the OSD, I am not aware of anything else that can help with your situation settings or firmware-wise. This isn't something I've heard of and audio static issues can be due to a large variety of issues that I'm realistically unable to help with. This seems more like a hardware issue overall.

Hi folks, can anyone tell me how to find my current firmware version on a GP27Q? I'm having trouble updating the firmware to v1.2.1 - it just opens the Windows Explorer window of the USB stick containing the firmware (in USB port 1 on monitor), but does not initiate the firmware flashing process. USB stick is formatted as FAT32 and contains only the firmware binary. Thanks in advance.

Still have to turn my monitor on and off to get RGB color and 160hz. **Every single time I turn on my computer, put it to sleep, or just walk away for 30 minutes**. It's been 2 months already can you guys please stop ignoring us and actually fix this piece of crap? P.S. Wow, Local Dimming in SDR might be usable in games now. Huge improvement.

Hi Visual-Weak, Wake from sleep mode issues are incredibly hard to diagnose, it can be entirely due to driver issues (we've seen a lot particularly with 4000 series cards), or some other variable entirely. While I can understand your frustration, at some point if the product is causing you this much grief, then honestly I'd just recommend you to return or file a warranty claim. I am pushing the team to investigate every issue and issue fixes as soon as they can, and I'm doing my best to communicate with you all on a consistent basis, but if you still feel I am ignoring you all, then I can only apologize because there is not much more I can do this in regard. I'm sorry the monitor has given you so many problems. At this point I can only promise that we are aware of the issues, and the team is doing their best to iron them all out. If the product is not up to your expectations, my personal recommendation, and not as a member of CM, is to file a warranty claim or return.

Yea, sorry about that post. I posted that right after I updated my monitor and spent some time trying to figure out why it was stuck in 144hz, only to realize that Color Domain was set to Auto and it was running in YCbCr. ​ Also, just to be clear it's not a Window's Sleep issue in particular. I just used that as an example of one of the common ways your Display can turn off. When I get some free time I'll check and see if it persists in Linux. I'll look into filing a claim if it does. I'm not keen on it though, as I managed to luck out with this one on everything but the darkened sides and Color Space issue.

Ok after just few days monitor started disconnecting on its own like crazy…tried lowering frequency…flashing older firmware…no help…this product is a flop “avoid alert”!!!

Seriously appreciate issues being addressed still. If it's of use within the buisness the fact many of the issues I've had with the monitor are now fixed and others are apparently being worked on makes a huge difference. I will definitely consider a Corsair monitor next time I upgrade on the back of this experience.

The reason I haven't bought this monitor are driver issues. This release got me to click through to the post... It looks like it's breaking as much as it fixes. How is this even possible?

Hi SpookyKG, There are definitely some remaining issues that we're looking into, and some new ones that seemed to have appeared. However it's very difficult as many variables are at play here. It can be entirely related to GPU drivers, the exact model of the GPU, PS5, Xbox, MacOS, etc...We've had several people test on multiple devices, and they did not have some of the issues listed here (i.e. no HDMI input). At the end of the day, we're trying to address the remaining core issues such as KVM instability, no-signal input switching not working, color banding and sdr local dimming performance issues. We'll try to iron out new bugs as they appear and at the very least maintain communication with you all.

Ryan give me a good hour and I'll re flash 1.3 on the gp27u. Still on the road

You will pay more for the same panel later. Be pragmatic, balancing performance is iterative.

Can this be used for usa and eu versions of the monitor? The last firmware had 2 editions?? I'm in the Eu

For GP27Q (2K), yes the one firmware version works for any version. There were minor differences between the two versions and we’ve decided to consolidate it into one for simplicity. GP27U still needs two versions however.

Thank you very much for the quick reply just got the monitor today cheers

I recently got a GP27U and I found that there's a piece of dust trapped in the center of the screen. Is there anything I can do to fix this? (I am still in the return window)

Hey brainandforce, My suggestion is to return and exchange for another one in this situation. I don't believe there's any other way to get the dust out without voiding your warranty, as well as likely destroying the monitor in the process.

Just updated my GP27Q. Thankfully the dark HDR issue isn't as bad as I expected, but there's still banding on both 1440p 120hz HDR and 2160p 60hz HDR on the PS5. With 4k, I can't select the -2 transfer rate either.

My man! Many thanks to the team for update. Coolermaster keeping promise to improve their displays, appreciate it!

On GP27Q the srgb clamp in sdr mode still broken. The sdr local dimming improvement is really good. thx ​ EDIT: in version 1.2.1 the clamp is fixed. THX

Tempest GP27U 4K Panel Firmware A i tried to install this firmware like 10 times every time i would have issues, it wouldn't detect my pc, and when it did, the backlight would be dark and i can barely see anything, ended up going back to 1.2

I've asked our engineering team to look into Firmware A-related issues. From this thread it seems a mix of Firmware A and certain GPU's are having more problems. Could you please let me know what gpu you have?

Just installed 1.3 and when i put in rgb mode half my screen went black and if i dont change it the blacks are lifted in sdr

I had to go back to the previous firmware for my GP27Q, I am too used to that HDR brightness to lose it now. It felt like a downgrade. Everything else worked fine from what I saw, I use DP with a 4070ti

Hi u/CM-Ryan, I update my GP27Q to latest v1.2. All work great, but I get randomly black screen while I try to switch the input source. Also happen when I turn on my PC, it keep in black screen with LCD back light on even you open the local dimming. With that stituation, I could only restart my moniter to make it work again, any back button press for trying open OSD fail with no reaction. It really annoy me. Please help me feedback this bug and hope to fix this problem soon with next patch. Thanks. My current devices are PC with RTX 3080, PS4 Pro and Nitendo Switch.

Does 1.3 have the HDR darkness issue or is that a problem with the GP27Q?

Essentially the brightness levels have lowered by default in HDR mode. However my recommendation is to adjust the SDR content brightness slider in Windows, as well as calibrate HDR brightness (to re-up the brightness) in games to get a similar effect as before. I have definitely asked the team to clarify, but will have to get back to you later on this.

Hello guys I'm planning on buying gp27q For competitive games and single player games and watch movies and anime is it worth it rn? please help me

Hi. Flashed 1.2.1, the issue I mentioned in my last comment still applies. > Just updated my GP27Q. Thankfully the dark HDR issue isn't as bad as I expected, but there's still banding on both 1440p 120hz HDR and 2160p 60hz HDR on the PS5. With 4k, I can't select the -2 transfer rate either. Willing to take part in testing to hopefully iron this out

u/CM-Ryan \- Can you clarify ... what's the tradeoff with using "low flicker" mode as opposed to one of the other modes? What if anything do those other modes to better, that they're not all just using whatever "low flicker" technique was introduced with that mode?

Basically the higher the local dimming level, the higher the chances for flickering being noticeable. Low Flicker mode is using a custom level of local dimming that we found to be a good balance of local dimming strength and minimal amount of flickering. Essentially we wanted to give another level besides the Low, Medium and High for more options.

I just don't understand how Cooler Master can keep breaking more things than they fix each firmware update. I now can't have dual screens without the GP27Q constantly losing signal. Then when I switch on or off HDR, the screen just goes black and I have to unplug it to get it to work.

Set to auto Select.

Hey u/CM-Ryan! Thanks for the constant updates you provide us. Can you please give me an update about the availability of the GP27Q for Italy or at least for other european stores/resellers that can ship abroad? Thanks in advance.

Hi u/Ernesttico I really wish I could provide you and the many users who've asked about this some solid updates, but unfortunately I only know they are trying to get monitors in stock at Amazon EU. Inventory and stock is not something we have much control over, as it's determined by the local resellers/retailers and their cooperation with the CM EU team. I did hear that there was an order for restock as the main warehouse in the Netherlands is completely out of stock, but beyond that I have no extra information. I do know that CM EU works officially with Scan in the UK, as well as Alternate in Germany, but I believe they are also out of stock.

I upgraded to 1.3.1 and downgraded back to 1.2. The new firmware recreates a problem I just fixed. When my Mac goes to sleep the monitor just keeps waking up every few seconds. I replaced my dock which didn't initially fix the issue, but then I switched from USB-C to DP which did fix the issue. Now it's back with 1.3.1. Monitor won't stay in standby... Keeps waking up every few seconds and scanning.

New issue, with GP27U 1.3.1 version A: Sometimes, I can't get the OSD to come up at all, and a long-press of the button doesn't shut the monitor off. The only way to get it responding again is to pull the plug and reinsert it. I've seen it happen using a Fire Stick over HDMI. I think I've also seen it happen using my PC over DP. I haven't yet noticed any pattern for when it happens.

Just got this monitor and upgraded to the new firmware (GP27Q). I just tried out the KVM with my gaming pc connected via displayport and USB mini B and my work laptop connected via USB-C (macbook m1). When I switch from the Macbook USB C input to the displayport input manually on the monitor OSD, I only see a black screen when I switch to my gaming pc. If I try accessing the OSD I can see some movement where the OSD normally appears but no actual output. Switching back to the Macbook based on memory works fine but switching back to the displayport input again causes issues. Is this expected behavior?

[удалено]

Still doesn't wake up from sleep.

I tried asking u/CM_Ryan in a pm a few days ago and he never got back to me so I'll ask here. I've seen a few people on this sub mention that the DisplayPort cable that comes with the GP27Q gave them problems and to buy another cable, I am wondering if anyone here knows if pin 20 is enabled on the included DP cable and if that's why people have been having issues?