https://bugs.kde.org/show_bug.cgi?id=464525
Bug ID: 464525
Summary: kwin_x11 hangs when USB keyboard unplugged while
laptop suspended
Classification: Plasma
Product: kwin
Version: 5.26.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: magib...@hotmail.com
Target Milestone: ---
Created attachment 155438
--> https://bugs.kde.org/attachment.cgi?id=155438&action=edit
kwin_x11 stacktrace during hang (gdb thread apply all bt)
SUMMARY
kwin_x11 hangs when USB keyboard is unplugged while the laptop is suspended.
STEPS TO REPRODUCE
1. Plug an external USB keyboard to my laptop. (probably a mouse also works, or
both)
2. Start a X11 Plasma session.
3. Suspend the laptop and close the lid.
4. Unplug the external keyboard.
5. Open the laptop lid, so that it wakes up from suspension.
OBSERVED RESULT
The desktop doesn't show up. The screen remains black. The laptop's keyboard
and touchpad are unresponsive. The external keyboard, if plugged again, is also
unresponsive. I have to press SysRq key combinations to kill the X server or
reboot, or log into the machine via SSH. Switching VTs does not work: chvt
hangs.
EXPECTED RESULT
The desktop shows up and the laptop's keyboard and touchpad work properly.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.102.0
Qt Version: 5.15.8
Kernel Version: 6.1.6-arch1-3 (64-bit)
Graphics Platform: X11
Processors: 12 × Intel® Core™ i7-8750H CPU @ 2.20GHz
Memory: 30,8 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630
ADDITIONAL INFORMATION
Thank you very much.
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