https://bugs.kde.org/show_bug.cgi?id=525353
Bug ID: 525353
Summary: [Wayland][amdgpu] Screen/wallpaper rendering artifacts
after resuming from sleep on RDNA 4 (RX 9060 XT)
Classification: Plasma
Product: kwin
Version First unspecified
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 195856
--> https://bugs.kde.org/attachment.cgi?id=195856&action=edit
Screenshot of desktop rendering artifacts after sleep
SUMMARY
After resuming from sleep (S3), persistent visual artifacts appear on the
Plasma desktop wallpaper and some window surfaces. The issue is purely
software/buffer-related: moving a window or changing the wallpaper forces KWin
to redraw the area and clears the artifacts. The mouse cursor renders above the
artifacts without clearing them.
STEPS TO REPRODUCE
1. Log into a KDE Plasma Wayland session on an AMD RDNA 4 GPU (RX 9060 XT).
2. Put the system to sleep (suspend / S3).
3. Wake the system up.
OBSERVED RESULT
Visual artifacts/corrupted framebuffers appear on the desktop and window
surfaces. Desktop artifacts remain until the wallpaper is changed or the
session is restarted. Window artifacts disappear when the window is moved
(triggering a redraw).
EXPECTED RESULT
Clean desktop and window rendering upon resume without damaged VRAM/framebuffer
artifacts.
SOFTWARE / HARDWARE VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.7.4
KDE Frameworks Version: 6.x
Qt Version: 6.x
Kernel Version: 7.2.3-arch1-2
Graphics Platform: Wayland
GPU: AMD Radeon RX 9060 XT (RDNA 4)
Mesa Version: 26.2.2-arch1.1
ADDITIONAL INFORMATION
Journal logs show a race condition / delay sleep error during suspend/resume:
`kwin_wayland: Failed to delay sleep: The operation inhibition has been
requested for is already running`
`kwin_wayland: The main thread was hanging temporarily!`
It seems KWin fails to handle buffer eviction/restoration properly during
sleep-inhibition on this hardware/Mesa combination.
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