https://bugs.kde.org/show_bug.cgi?id=453134
Bug ID: 453134
Summary: KWin Wayland locks up whenever the Zoom comms app
enters/leaves a breakout session
Product: kwin
Version: 5.24.4
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: philipp.reichm...@gmail.com
Target Milestone: ---
SUMMARY
KWin Wayland locks up when entering or leaving breakout groups in Zoom (the
comms app from https://zoom.us). The mouse pointer freezes and no keyboard
input is accepted. The only way out is REISUB or a hard reboot.
This happens regardless of whether Zoom is started in regular Wayland, in
XWayland (`QT_QPA_PLATFORM=xcb zoom`), or in a separate kwin_wayland session
(`export `dbus_launch `, `kwin_wayland --socket test`, `WAYLAND_DISPLAY=test
zoom`)
Tested with KWin 5.24.4 and the factory RPMs for Zoom 5.10.4 (2845) 64bit on
OpenSUSE Tumbleweed.
STEPS TO REPRODUCE
1. Open Zoom, join a Zoom conference
2. In the conference, enter or leave breakout groups.
OBSERVED RESULT
Zoom opens a floating popup window that tells you you're joining the breakout
group or rejoining the main session. At this moment KWin locks up.
This might be a DBus issue; however, even after waiting for 10 minutes the
session does not unfreeze again.
EXPECTED RESULT
Whatever bugs Zoom may have (see below for other Wayland issues), KWin should
not freeze.
SOFTWARE/OS VERSIONS
Zoom Version: 5.10.4 (2845)
Operating System: openSUSE Tumbleweed 20220415
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.2
Kernel Version: 5.17.2-1-default (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-8550U CPU @ 1.80GHz
Memory: 15.5 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
ADDITIONAL INFORMATION
Zoom is a Qt application.
Zoom has other window management issues on Wayland as well; e.g. when starting
Zoom in regular Wayland (i.e. not in XWayland) the Zoom process quits often
upon entering a conference. If this happens in a nested Wayland session, an
"Error in client communication" message is generated, with the Zoom PID. While
this is probably a Zoom bug, these bugs should not lead KWin to lock up.
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