https://bugs.kde.org/show_bug.cgi?id=452418
Bug ID: 452418
Summary: Occasional rendering glitches in window previews
Product: kwin
Version: 5.24.4
Platform: Debian testing
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: jonathan.str...@gmx.de
Target Milestone: ---
Created attachment 148059
--> https://bugs.kde.org/attachment.cgi?id=148059&action=edit
The rendering glitch
Dear KDE developers,
I've recently (~3 months) been getting glitchy rendering in window previews as
shown in the attached screenshot. I had hoped that this might get fixed with
KDE 5.24.4 (I thought this might be
https://bugs.kde.org/show_bug.cgi?id=421135) but unfortunately it still
happens.
STEPS TO REPRODUCE
1. Open two windows of the same application (so they get grouped)
2. Hover over their task manager entry to bring up the window list (the one
with thumbnails)
3. Move the mouse back and forth between the two windows' thumbnails to
alternate between their previews (sometimes the glitch happens very quickly,
sometimes it takes a minute or two)
OBSERVED RESULT
The window previews occasionally glitch out and get rendered incorrectly.
EXPECTED RESULT
The window previews should get rendered correctly.
SOFTWARE/OS VERSIONS
Linux: Kernel 5.16.12 (x86-64)
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Graphics: X11, Mesa 22.0, amdgpu/radeonsi (Radeon Pro W6800)
Monitors have 120Hz refresh rate set (if relevant)
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