Created attachment 150155 [details] 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
Hello, .that version is not supported anymore. I would suggest to try with Kubuntu 22.04 that brings current LTS version 5.24 Multiscreen support has been improved a lot. However I only recommend to use X11 as Wayland has issues in Ubuntu 22.04. Regards Galder
Also could be related to the actual krohnkite script. You could report directly to them. Also have multiscreen setup documentation. https://github.com/esjeon/krohnkite