https://bugs.kde.org/show_bug.cgi?id=431446
Bug ID: 431446
Summary: Blinking panels and window contents not refreshing
Product: kwin
Version: 5.20.5
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: ed...@inbox.lv
Target Milestone: ---
Created attachment 134741
--> https://bugs.kde.org/attachment.cgi?id=134741&action=edit
Screen flashing 1
SUMMARY
Desktop contents, namely panels and their widgets, start to blink. For example
clock widget does not update the time anymore, it just blinks or stays at some
value.
The same happens with task "Task Manager", icons blink, contents are not
updated.
This can be fixed by restarting plasmashell, the fix is temporal as this starts
to happen again after some time.
The same weird behaviour happens to window contents, they just freeze (and
sometimes blink), this can be fixed by restarting the application.
If I move the window, it gets refreshed briefly.
I think I can disable + enable compositing too and these are fixed for some
time.
If this matters, I have 7 activities and a lot of applications open in total.
STEPS TO REPRODUCE
1. log in and use the system, maybe 3-8 hours, sometimes even 1 hour is enough
OBSERVED RESULT
Stuff starts to blink and windows do not refresh the contents.
EXPECTED RESULT
Stuff does not blink and windows do refresh their content.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
This started to happen like half a year ago, just very seldom, now it happens
multiple times a day.
I have built-in "Mesa Intel(R) HD Graphics 530 (SKL GT2)".
I have tried so many things, that I don't remember them all, but I'll try:
setting options and their combinations:
KWIN_TRIPLE_BUFFER=1
KWIN_USE_BUFFER_AGE=1
KWIN_USE_INTEL_SWAP_EVENT=1
try opengl2/3 rendering
using different kernels
multiple options for i915
using "intel" and "modesetting" drivers
not using some applets
trying to use different tearing prevention mechanisms
even wiping out my home dir kde settings
But I can not pinpoint what triggers this.
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