Ubuntu
xserver-xorg-video-intel package

  1. Bug #282081
  2. Comment #1

Comment 1 for bug 282081

Revision history for this message
Fred (f-detienne) wrote : Re: X hangs and not recoverable. MTRR error messages.

I just made further tests and I can add a few things:

 - opengl is not guilty - had a GL screensaver (hypertorus) running for hours
 - the MTRR error does NOT seem to be the root cause of the problem; I systematically get an MTRR at boot

It seems ACPI is the issue:
   - causes the above symptoms (X hang at 100% CPU; not recoverable) after restore from screen power saving
   - ACPI sometimes causes hang at boots
   - hang at resume after suspend