Thanks. That is a very helpful screenshot. It appears that only recently
changed widgets/actors are rendered correctly. So this suggests a bug in
mutter's buffer age logic, or the graphics driver.
Can you please:
1. Run 'lspci -k' and attach the output.
2. Run 'dmesg' (after the problem has occurred) and attach the output here.
** Package changed: gnome-shell (Ubuntu) => mutter (Ubuntu)
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: mesa (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: mesa (Ubuntu)
Status: New => Incomplete
** Changed in: mutter (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1752145
Title:
system freeze after full screen video viewing with Xorg on ultrawide
monitor
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