Ubuntu
xserver-xorg-video-intel package

  1. Bug #946311
  2. Comment #134

Comment 134 for bug 946311

Revision history for this message
In , Bug-track-c (bug-track-c) wrote :

After your comment i did some more tests -- just in case.
Enabled VT-d and removed intel_iommu=igfx_off line. Result is really interesting:
I get oops only on second boot without igfx_off. First boot without igfx_off is ok, both displays are working, but after power off and new start with same configuration - without igfx_off kernel it will oops.

Other Zenbook had similar problem with suspend. After some suspend issue it wasn't able to boot. Reason - memory corruption. May be some thing similar is happening here. And some controller stay confused after power off with not setted "intel_iommu=igfx_off".