https://bugs.kde.org/show_bug.cgi?id=505576
Bug ID: 505576
Summary: Random flashing white horizontal lines on Wayland
Classification: Plasma
Product: kwin
Version First unspecified
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: tesfab...@gmail.com
Target Milestone: ---
SUMMARY
Since some weeks I'm experiencing random white horizontal lines (not spanning
the entire width of the display, only ~100px I'd say). At first they were
spurious (and not visible when gaming, for example) but since some update these
days they are much more frequent (especially when doing something like
drag-selecting a region in the desktop).
I have tried some minutes on Plasma X11 and there it was NOT happening.
I've also tried on Hyprland (so, Wayland) and there it was NOT happening.
I've tried recording the screen with OBS but the artifacts weren't visible in
the final video.
Video of the problem (recorded by a phone):
https://youtube.com/shorts/qYVCK4sYwzQ
STEPS TO REPRODUCE
1. Start Plasma Wayland
2. Drag-select a box in the desktop (for example)
OBSERVED RESULT
Some line glitches / artifacts appears for a moment
EXPECTED RESULT
No glitches should appear
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: ArchLinux with kernel 6.15.2-arch1-1 (64 bit)
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.1
ADDITIONAL INFORMATION
GPU: Radeon RX 7900 XT
glinfo:
GL_VERSION: 4.6 (Compatibility Profile) Mesa 25.1.3-arch1.3
GL_RENDERER: AMD Radeon RX 7900 XT (radeonsi, navi31, LLVM 20.1.6, DRM 3.63,
6.15.2-arch1-1)
GL_VENDOR: AMD
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