https://bugs.kde.org/show_bug.cgi?id=454099
Bug ID: 454099
Summary: KWin crash in KWin::Workspace::clientArea when monitor
wakes up from sleep
Product: kwin
Version: 5.24.4
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: core
Assignee: kwin-bugs-n...@kde.org
Reporter: burne...@gmail.com
Target Milestone: ---
Created attachment 149030
--> https://bugs.kde.org/attachment.cgi?id=149030&action=edit
Stack trace produced by following these instructions:
https://community.kde.org/KWin/Debugging#TL.3BDR_for_bug_reporters
SUMMARY
KWin often crashes when monitors wake up from sleep. GDB stacktrace says the
crash is in KWin::Workspace::clientArea:
Thread 1 "kwin_x11" received signal SIGSEGV, Segmentation fault.
KWin::Workspace::clientArea (this=0x563633dfaaf0, opt=KWin::PlacementArea,
output=<optimized out>, desktop=<optimized out>) at
/usr/src/debug/kwin-5.24.4-1.fc35.x86_64/src/workspace.cpp:2288
2288 screenArea = effectiveOutput->geometry();
STEPS TO REPRODUCE
1. Lock the screen
2. Power off both monitors / let monitors go to sleep
3. Power on both monitors / wake monitors up
Repro is inconsistent. Seems to happen most consistently after a fresh reboot.
OBSERVED RESULT
System journal indicates that kwin crashed. Desktop shows various kinds of
corruption: flashing or black background, occasionally missing panels.
EXPECTED RESULT
Crash doesn't happen.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 35
(available in About System)
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
If I remember correctly, this crash started happening when I bought a new
monitor, changing my display arrangement to a 2560x1440 primary monitor and a
portrait mode 1920x1080 monitor on the left side. The crash seems to be related
to the primary monitor waking up, judging by observing journal output when
waking up the monitors.
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