https://bugs.kde.org/show_bug.cgi?id=511230
Bug ID: 511230
Summary: KWin Wayland Crashes when disconnecting Thunderbolt
Dock
Classification: Plasma
Product: kwin
Version First git-stable-Plasma/6.3
Reported In:
Platform: Debian testing
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
I have an Intel Maple Ridge Thunderbolt card in my system. I route my monitors
through a Thunderbolt Dock (which is connected to a Thunderbolt hub). The dock
is a Dell WD22TB4, and both monitors are connected to the displayports (which
are downstream of an MST Hub in the dock.) When I disconnect the dock from the
hub (=> both monitors are disconnected) KWin will crash after a brief moment.
With the hub disconnected, I have no displays attached to the system. When the
crash happens, there does seem to be a burst of CPU activity, as the system
fans briefly spool up.
STEPS TO REPRODUCE
1. Connect 2 monitors to Thunderbolt dock (may need embedded MST hub?)
2. Log in to Plasma Wayland session, ensure both monitors are enabled
3. Disconnect hub
4. Wait a minute
5. Plug back in
OBSERVED RESULT
KWin crashes and recovers, but applications such as Firefox do not recover and
are left at the "Report crash" dialog
EXPECTED RESULT
KWin and applications do not crash
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian Testing
KDE Plasma Version: 6.3 / 6.5.0
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
ADDITIONAL INFORMATION
Used to work correctly somewhere around 5.26. Believe it broke somewhere around
the Debian Testing upgrade to 5.27, but at this point I can't pin it down
exactly. Have submitted bug reports via crash reporter, but unsure where they
ended up.
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