"Input/output error" suggests there's a disk problem but I suppose such
an error could occur in any kernel driver.
Next time the error pops up, please run:
journalctl -b0 > journal.txt
and attach the resulting text file here.
** Package changed: xorg-server (Ubuntu) => linux (Ubuntu)
**
Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug. I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross
