Comment 2 for bug 24371

'lockup' is i810 parlance for 'the chip just went sideways'. so, it could be
caused by anything that, well, makes the chip hang. one known case that can
kill things is:
  * play a video with Xv
  * suspend your machine with ACPI
  * play a video again with Xv
this will kill your chip every time.

but if it just hangs after an hour of use or whatever, then that's something
else entirely.