https://bugs.kde.org/show_bug.cgi?id=445338
Bug ID: 445338
Summary: Visual glitch in form of narrow horizontal stripes
across animated parts of the screen
Product: kwin
Version: 5.23.2
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: rybak....@gmail.com
Target Milestone: ---
Created attachment 143450
--> https://bugs.kde.org/attachment.cgi?id=143450&action=edit
camera footage of the glitch
SUMMARY
Sometimes (I'm not sure what's causing this), there are visual glitches when
there is some movement on screen. It looks like a bunch narrow (1 pixel in
height) horizontal stripes.
STEPS TO REPRODUCE
No known way to reproduce.
OBSERVED RESULT
See camera footage – this glitch does not show up in videos recorded via
SimpleScreenRecorder for me.
EXPECTED RESULT
No visual glitches like this one.
SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.23
KDE Plasma Version: 5.23.2
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.3
Kernel Version: 5.11.0-38-generic (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
ADDITIONAL INFORMATION
Reporting this as kwin bug, because workaround `kwin --replace` seems to fix it
for me. I've observed this for quite some time now, so it is not new to the KDE
version 5.23.2, and probably also existed in 5.22.* and 5.21.*.
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