https://bugs.kde.org/show_bug.cgi?id=488640
Bug ID: 488640
Summary: Kwin (wayland) crashes after idle for about one hour
Classification: Plasma
Product: kwin
Version: 6.0.5
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: core
Assignee: kwin-bugs-n...@kde.org
Reporter: leandrosansi...@gmail.com
Target Milestone: ---
Created attachment 170581
--> https://bugs.kde.org/attachment.cgi?id=170581&action=edit
backtrace from all threads obtained from attaching gdb to kwin_wayland
SUMMARY
KWin crashes when my monitors go off due to the energy saving policy.
I have three screens connected to HDMI and DisplayPort.
I can reproduce this bug since the Plasma 5 days and have reported it already
months ago, but it was closed as I could not get more info
(https://bugs.kde.org/show_bug.cgi?id=480992).
I now can reproduce the bug quite easily. It simply takes me hours to to so, as
the bug happens after I stay away from the computer for a long time :-(
It turns out I managed to attach gdb to kwin_wayland (connected from another
computer, via ssh, as drkonqi is not triggered) and get a backtrace and a
coredump. I am posting a backtrace here (thread apply all bt -full). I can
submit the coredump upon request.
STEPS TO REPRODUCE
1. have three screens connected to hdmi and displayports
2. set the energy policies to shutdown the screens after some time (I put in
5min in this case)
3. stay away from the computer until the screen turns off. It might flicker and
turn off and on multiple times (no idea why)
4. be patient
5. kwin crashes and all non-qt applications are closed. Only Qt applications
keep open.
OBSERVED RESULT
Kwin crashes (and restarts) and all non-qt applications close
EXPECTED RESULT
Kwin not crashing or at least all applications (qt or not) keep open after the
crash.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
Operating System: Manjaro Linux
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.1
Kernel Version: 6.9.3-3-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 5950X 16-Core Processor
Memory: 62.7 GiB of RAM
Graphics Processor: AMD Radeon RX 6600
Manufacturer: ASUS
ADDITIONAL INFORMATION
In the attached backtrace, look for (this=0x0), which is the call that triggers
the crash.
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