Are you using an external monitor with your laptop? Are you using Gnome as your DE?
Yes external monitor (and it worked fine until recently) and no, not gnome, I'm running KDE Plasma.
]]>wl_registry@26: error 0: invalid global wl_output (36)
relevant?
]]>#6 0x00007fee0c1a89ac in QMessageLogger::fatal(char const*, ...) const () from /usr/lib/libQt5Core.so.5
This means the process threw some error to stderr. Please post the full journal output for the plasmashell process (not just the coredump)
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