https://bugs.kde.org/show_bug.cgi?id=512511
Bug ID: 512511
Summary: Screen freeze when watching YouTube videos ("Atomic
modeset test failed! Permission denied")
Classification: Plasma
Product: kwin
Version First 6.5.80
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Keywords: regression
Severity: major
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Twice in the last day, I've had my screen freeze visually while watching (well,
listening to) YouTube videos in the background.
Once it happened when the laptop was unplugged and the screen dimmed, and the
second time happened while it was plugged in and I was entering full-screen
mode.
I wasn't able to catch logs from the first time it happened, but here are the
logs from the second time:
[massive flood of millions of these lines]
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to create framebuffer:
Invalid argument
Nov 22 23:23:32 engine kwin_wayland[1978]: Rendering a layer failed!
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to find a working output
layer configuration! Enabled layers:
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 2880x1800) -> dst
QRect(0,0 2880x1800)
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 256x256) -> dst
QRect(1046,1104 256x256)
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to create framebuffer:
Invalid argument
Nov 22 23:23:32 engine kwin_wayland[1978]: Rendering a layer failed!
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to find a working output
layer configuration! Enabled layers:
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 2880x1800) -> dst
QRect(0,0 2880x1800)
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 256x256) -> dst
QRect(1046,1104 256x256)
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to create framebuffer:
Invalid argument
Nov 22 23:23:32 engine kwin_wayland[1978]: Rendering a layer failed!
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to find a working output
layer configuration! Enabled layers:
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 2880x1800) -> dst
QRect(0,0 2880x1800)
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 256x256) -> dst
QRect(1046,1104 256x256)
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to create framebuffer:
Invalid argument
Nov 22 23:23:32 engine kwin_wayland[1978]: Rendering a layer failed!
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to find a working output
layer configuration! Enabled layers:
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 2880x1800) -> dst
QRect(0,0 2880x1800)
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 256x256) -> dst
QRect(1046,1104 256x256)
Nov 22 23:23:32 engine kwin_wayland[1978]: Failed to find a working output
layer configuration! Enabled layers:
Nov 22 23:23:32 engine kwin_wayland[1978]: src QRectF(0,0 2880x1800) -> dst
QRect(0,0 2880x1800)
Nov 22 23:23:32 engine kwin_wayland[1978]: Atomic modeset test failed!
Permission denied
Nov 22 23:23:32 engine kwin_wayland[1978]: Applying output configuration
failed!
2880x1800 is the laptop's native resolution. I have it at 175% scale.
When this happens, the system remains *functionally* responsive; it's a purely
visual freeze. I can change the volume and hear the feedback sound played, and
play/pause playing music or videos.
In both cases, I was able to recover by switching to another VT and manually
restarting kwin_wayland.
This has only started happening since yesterday.
Operating System: KDE Linux 2025-11-22
KDE Plasma Version: 6.5.80
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.0
Kernel Version: 6.17.8-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 7840U w/ Radeon™ 780M Graphics
Memory: 17 GB of RAM (16.0 GB usable)
Graphics Processor: AMD Radeon 780M Graphics
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