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Date: Wed, 23 Nov 2011 10:54:10 +0200 (EET)
From: Meelis Roos <mroos@linux.ee>
To: Keith Packard <keithp@keithp.com>
cc: David Woodhouse <dwmw2@infradead.org>, dri-devel@lists.freedesktop.org,
        Linux Kernel list <linux-kernel@vger.kernel.org>,
        Daniel Vetter <daniel@ffwll.ch>
Subject: Re: Bisected regression: hang on i915 between 3.1.0-rc9 and 3.1.0
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> > 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@linux.ee)