Yes.  I suspect that, as soon as any 3D happens, the machine locks hard.

How does it even get into a state that makes the hardware reset button not
work?
On Aug 31, 2011 3:08 PM, "Keith Packard" <keithp@keithp.com> wrote:
> On Wed, 31 Aug 2011 14:30:00 -0400, Andrew Lutomirski <luto@mit.edu>
wrote:
>
>> Yes. On the latest -rc, the system still freezes hard when mutter starts
up
>> if I set i915.semaphores=1.
>
> Ok. You said that you were running compiz before and that failed, and
> are now running mutter and that fails also?
>
> --
> keith.packard@intel.com