Professional electrical/mechanical engineer and at home tinkerer.
Repairer at several repair cafés in Berlin.
Language: English/Dutch/German
Header shows the Nixie clock I made some years ago (and a vinyl record player behind it).
@cabbage For me, it also depended if I was working with a 2nd screen attached or only my laptop.
With only the laptop it happened more often.
The 2nd screen never froze, but sometimes the laptop screen would with the 2nd screen still working fine.
@cabbage Might not be related, but I was triggered by your "flipdone timed out"... See:
https://community.frame.work/t/responded-linux-recent-update-is-causing-some-sort-of-stalling-freezing-in-pop-os/48537/18?u=florisnielssen
Which window manager are you using?
What typically 'fixed' it for me was switching to terminal ([CTRL]+[ALT]+[F3]) and afterwards switching back to the GUI again ([CTRL]+[ALT]+[F2]). It took a minute, but allowed me to resume my work.
I had issues on PopOS in combination with Wayland.