Bug 512290 - The monitor is flickering
Summary: The monitor is flickering
Status: REPORTED
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (other bugs)
Version First Reported In: 6.5.2
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-11-18 12:40 UTC by Konstantin
Modified: 2025-11-21 16:51 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:


Attachments
Video (3.38 MB, video/mp4)
2025-11-18 12:40 UTC, Konstantin
Details
drm_info.txt (125.75 KB, text/plain)
2025-11-21 03:21 UTC, Konstantin
Details
Video (1.29 MB, video/mp4)
2025-11-21 10:55 UTC, Konstantin
Details

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Description Konstantin 2025-11-18 12:40:42 UTC
Created attachment 186919 [details]
Video

On a monitor with 160 Hz, the screen flickers when I click on something or move the mouse across the screen. If you turn on 60,120,144Hz, the flickering disappears.

The video doesn't convey how much flicker it is (it looks worse in real life). Monitor Model: Acer Predator XB323QKV3bmiiphx

Operating System: Arch Linux 
KDE Plasma Version: 6.5.2
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.0
Kernel Version: 6.17.8-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 9950X3D 16-Core Processor
Memory: 96 ГиБ of RAM (93.9 ГиБ usable)
Graphics Processor: NVIDIA GeForce RTX 4080
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: X870E AORUS ELITE WIFI7
System Version: Default string-CF-WCP-ADO
Comment 1 TraceyC 2025-11-20 18:42:56 UTC
This may be a driver issue. Can you give us the following information?

Information about your monitor with 

kscreen-doctor -o

Also, attach the output of

drm_info

Thanks
Comment 2 Konstantin 2025-11-21 03:21:56 UTC
Created attachment 187013 [details]
drm_info.txt

I agree, maybe it's the video driver. I searched the forums and they say that there is no such problem in Gnome. I installed Gnome for fun, and there was no flickering in a few minutes of using it.

I am attaching information from drm_info to a text file, as there is a lot of it. I really ask you to solve the flickering problem, because it prevents me from fully using my new monitor. The lower right part of the screen is flickering and I do not know what to do about it.

Output: 1 DP-1 f20ada88-a9b8-44fc-a624-36a15070f3e5
        enabled
        connected
        priority 1
        DisplayPort
        replication source:0
        Modes:  1:3840x2160@60.00!  2:3840x2160@160.00*  3:3840x2160@144.00  4:3840x2160@119.88  5:3840x2160@120.00  6:3840x2160@59.94  7:2560x1440@160.00  8:2560x1440@144.00  9:2560x1440@120.00  10:2560x1440@59.95  11:1920x1080@119.88  12:1920x1080@60.00  13:1920x1080@59.94  14:1920x1080@50.00  15:1680x1050@59.95  16:1280x1024@75.03  17:1280x1024@60.02  18:1440x900@59.89  19:1280x960@60.00  20:1152x864@75.00  21:1280x720@60.00  22:1280x720@59.94  23:1280x720@50.00  24:1024x768@119.99  25:1024x768@75.03  26:1024x768@70.07  27:1024x768@60.00  28:800x600@75.00  29:800x600@72.19  30:800x600@60.32  31:800x600@56.25  32:720x576@50.00  33:720x480@59.94  34:640x480@75.00  35:640x480@72.81  36:640x480@59.94  37:640x480@59.93 
        Geometry: 2560,0 3072x1728
        Scale: 1.25
        Rotation: 1
        Overscan: 0
        Vrr: incapable
        RgbRange: unknown
        HDR: disabled
        Wide Color Gamut: disabled
        ICC profile: none
        Color profile source: EDID
        Color power preference: prefer efficiency and performance
        Brightness control: supported, set to 70% and dimming to 100%
        DDC/CI: allowed
        Color resolution: unknown
        Allow EDR: unsupported
        Sharpness control: unsupported
Output: 2 DP-2 f3df0b35-fc62-48d3-afa2-559863eb0ca0
        enabled
        connected
        priority 2
        DisplayPort
        replication source:0
        Modes:  38:2560x1440@144.00*!  39:2560x1440@120.00  40:2560x1440@59.95  41:2560x1440@59.95  42:1920x1080@119.88  43:1920x1080@60.00  44:1920x1080@59.94  45:1920x1080@50.00  46:1680x1050@59.95  47:1280x1024@75.03  48:1280x1024@60.02  49:1440x900@59.89  50:1280x960@60.00  51:1280x800@59.81  52:1152x864@75.00  53:1280x720@60.00  54:1280x720@59.94  55:1280x720@50.00  56:1024x768@75.03  57:1024x768@70.07  58:1024x768@60.00  59:800x600@75.00  60:800x600@72.19  61:800x600@60.32  62:800x600@56.25  63:720x576@50.00  64:720x480@59.94  65:640x480@75.00  66:640x480@72.81  67:640x480@59.94 
        Geometry: 0,127 2560x1440
        Scale: 1
        Rotation: 1
        Overscan: 0
        Vrr: incapable
        RgbRange: unknown
        HDR: incapable
        Wide Color Gamut: incapable
        ICC profile: none
        Color profile source: EDID
        Color power preference: prefer efficiency and performance
        Brightness control: supported, set to 50% and dimming to 100%
        DDC/CI: allowed
        Color resolution: unknown
        Allow EDR: unsupported
        Sharpness control: unsupported
Comment 3 Konstantin 2025-11-21 03:25:49 UTC
The second part of the message:
Can this harm and damage the monitor itself?
Comment 4 Konstantin 2025-11-21 10:55:10 UTC
Completing it.

The problem happens everywhere, but I don't understand the principles by which it appears. Sometimes everything can be fine for a few minutes, Sometimes it appears. But it is found everywhere.

Unfortunately, some screen twitches and blinks appear on their own, and some when I move the mouse. For example, when I was recording a video from the game, I didn't touch anything at all.

I turn on my computer and go about my business, and after a few minutes, the flickering starts in the lower right corner.

I also attach a video as the monitor flickers in the game. The most interesting thing is that as soon as I want to record this bug for a bug report on my phone on video, it disappears for a few minutes.
Comment 5 Konstantin 2025-11-21 10:55:56 UTC
Created attachment 187027 [details]
Video
Comment 6 TraceyC 2025-11-21 16:51:43 UTC
Thanks for the details, that's useful. The kwin developers will look into this from here.