Created attachment 140222 [details] Kwin core dump SUMMARY Hi there I have a reoccurring bug where kwin will crash on wayland. This crash then causes all x11 programs to crash (firefox running in X11 mode, spotify) and also all of plasma (producing lots of "Dr Konqi" windows). Sometimes its possible to reopen the application after, other times a full restart happens. It happens fairly regularly (once a day or so), but doesn't seem to be caused by any specific action and I can't see any logs that look suspicious. STEPS TO REPRODUCE 1. Run kwin in native wayland mode 2. Wait for it to crash OBSERVED RESULT Kwin crashes, as does firefox, spotify and all of plasma. Other applications seem to survive (e.g. system monitor). EXPECTED RESULT It shouldn't crash SOFTWARE/OS VERSIONS Operating System: Kubuntu 21.04 KDE Plasma Version: 5.22.3 KDE Frameworks Version: 5.84.0 Qt Version: 5.15.2 Kernel Version: 5.11.0-22-generic (64-bit) Graphics Platform: Wayland Processors: 12 × Intel® Core™ i7-8850H CPU @ 2.60GHz Memory: 31.0 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 630 ADDITIONAL INFORMATION
Created attachment 140223 [details] journalctl logs attached journalctl logs around time of failure
It also looks similar to https://bugs.kde.org/show_bug.cgi?id=437709 but has a different stack trace
(In reply to harry from comment #1) > Created attachment 140223 [details] > journalctl logs > > attached journalctl logs around time of failure The crash logged here is for plasmashell
The core dump is missing debug symbols.
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Created attachment 140678 [details] kwin_wayland backtrace dump with debuging symbols Hi, here's the crash with the right debuging symbols. Sorry it took a while for me to work out which ones I need to install. (Can also upload the coredump if needed but its 300MB) All the other things that crash at the same time have this in their stacktrace if that helps: QMessageLogger::fatal (this=this@entry=0x7fffac3b1980, msg=msg@entry=0x7fcbb2f9d0b8 "The Wayland connection broke. Did the Wayland compositor die?") at global/qlogging.cpp:893
In this case it would make sense to have the debugging symbols from kwin. You only have them on Qt which is nice but doesn't tell us much about where it crashes. On the journalctl logs we see other processes crashing with kwin. Can you still reproduce this issue? if so could you check with kwin-wayland-dbgsym installed? Also I know it's a bit more troublesome but testing against the beta would be very helpful to us as it might be something that already has been fixed for the next release.
*** This bug has been marked as a duplicate of bug 438097 ***