It looks like the kernel is running out of memory so freezes are
expected. Please try running without all those chrome and opera tabs
open and see if the problem reoccurs.
If you can't add more physical RAM then consider adding a swapfile to
the system: https://help.ubuntu.com/community/SwapFaq
** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)
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which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1803353
Title:
Display freezes (possible i915 freeze/hang)
To manage
Extra information: sudo kill -9 via ssh connection
did restore the display in working order without restarting the system
so I'm pretty sure this is caused by some kind of hang caused by xorg
process. Plain kill without -9 did not do anything, though.
Perhaps this is caused by some race
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