https://bugs.kde.org/show_bug.cgi?id=455934
Bug ID: 455934
Summary: Kwin always crashes when attaching an external HDMI
monitor
Product: kwin
Version: unspecified
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: scripts
Assignee: kwin-bugs-n...@kde.org
Reporter: spry.bed7...@fastmail.com
Target Milestone: ---
Created attachment 150155
--> https://bugs.kde.org/attachment.cgi?id=150155&action=edit
Backtrace generated via Crash Reporter tool
SUMMARY
- What I was doing when the application crashed:
I connected an external HDMI monitor to my laptop. In this specific case, the
screen was already unlocked. KWin crashed immediately.
- Custom settings of the application:
The Krohnkite tiling extension is enabled.
When the extension is disabled, the issue no longer reproduces.
The display settings are set up to extend the screen between the two monitors.
The crash can be reproduced every time.
STEPS TO REPRODUCE
1. Ensure the Krohnkite extension is enabled.
2. Ensure the screen is unlocked.
3. Start with no external monitor connected.
4. Connect an external monitor to the laptop's HDMI port.
OBSERVED RESULT
KWin crashes. Some display irregularities appear until KWin restarts (taskbar
appears in the middle of the screen, there is some flicker).
EXPECTED RESULT
The external monitor should be enabled and the display extended without issue.
SOFTWARE/OS VERSIONS
Application: kwin_x11 (5.18.6)
Qt Version: 5.12.8
Frameworks Version: 5.68.0
Operating System: Linux 5.4.0-120-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.04.4 LTS
ADDITIONAL INFORMATION
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