Bug 496394 - KWin bugs and crashes plasmashell after disabling a monitor
Summary: KWin bugs and crashes plasmashell after disabling a monitor
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: multi-screen (show other bugs)
Version: 6.2.3
Platform: Arch Linux Linux
: NOR major
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: multiscreen
Depends on:
Blocks:
 
Reported: 2024-11-17 19:41 UTC by Oleg
Modified: 2025-03-19 20:18 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Journal log (23.21 KB, text/plain)
2024-11-17 19:41 UTC, Oleg 		Details
"kscreen-console bug" output (44.27 KB, text/plain)
2024-11-17 19:41 UTC, Oleg 		Details
Recording of a bug (vertical monitor powered off at 00:10) (2.17 MB, video/webm)
2024-11-17 19:45 UTC, Oleg 		Details
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Description Oleg 2024-11-17 19:41:05 UTC 
SUMMARY
I have three monitors: 2 horizontal and 1 vertical. When I power off my vertical monitor strange things start happening to KWin: cursor jumps between 2 position, plasmashell flickers, errors spamming in the log.

STEPS TO REPRODUCE
1. Login into Plasma on multi-monitor setup
2. Power off vertical monitor

OBSERVED RESULT
KWin engages in weird behavior

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.2.3
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.0
Kernel Version: 6.11.8-2-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-7700K CPU @ 4.20GHz
Memory: 15.6 ГиБ of RAM
Graphics Processor: AMD Radeon RX 6700 XT
Comment 1 Oleg 2024-11-17 19:41:30 UTC 
Created attachment 175886 [details]
Journal log
Comment 2 Oleg 2024-11-17 19:41:52 UTC 
Created attachment 175887 [details]
"kscreen-console bug" output
Comment 3 Oleg 2024-11-17 19:45:24 UTC 
Created attachment 175888 [details]
Recording of a bug (vertical monitor powered off at 00:10)
Comment 4 Oleg 2025-03-19 20:18:37 UTC 
Can no longer reproduce