Created attachment 135780 [details] Output of sudo journalctl -b 0 --no-pager SUMMARY When i try to detach a tab from Firefox and move it directly to the second monitor the compositor crashes and restarts. If i detach a tab and not move it over directly and let it settle and resize first the compositor does not crash. STEPS TO REPRODUCE 1. Open Firefox 2. Open two tabs 3. Pick one tab and move it directly over to the second monitor OBSERVED RESULT Second screen turns black, compositor crashes. After a few seconds the compositor restarts and the system becomes usable again. EXPECTED RESULT Tab/Window gets moved to second monitor and is usable. SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20210215 KDE Plasma Version: 5.21.0 KDE Frameworks Version: 5.78.0 Qt Version: 5.15.2 Kernel Version: 5.10.16-1-default OS Type: 64-bit Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 1700X Eight-Core Processor Memory: 15,5 GiB of RAM Graphics Processor: AMD Radeon RX 5600 XT Monitors: 2x 1440p 144Hz 1x Display Port 1x HDMI 2.1 This Bug only applies to Wayland or Full Wayland session, it does not appear when using X11. The Bug does not appear if using a browser based on Chromium, only Firefox based ones. If further logs are needed i will be happy to help.
Created attachment 135844 [details] KCrash Report, generated 2021.02.18
That backtrace is a client crashing as a result of kwin crashing, rather than a crashlog of kwin itself. Can you run coredumpctl gdb kwin_wayland and see if that gives us anything
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!