Bisected regression: hang on i915 between 3.1.0-rc9 and 3.1.0

[Meelis Roos]

> > Yes, VT-x and VT-d are both enabled from BIOS setup.
> 
> Any reason for that? We've found all kinds of problems with DMAR enabled
> on these machines that is only resolved by completely turning it
> off. You might try with intel_iommu=off and make sure that's stable.

Well, there is reason for VT-x but actually none for VT-d because I am 
not giving out any PCI devices to virtual machines. Will also test 
witout it.

-- 
Meelis Roos (mroos at linux.ee)