[Intel-gfx] [PATCH] drm/i915: kicking rings considered harmful

[Daniel Vetter]

On Mon, Sep 26, 2011 at 21:07, Andrew Lutomirski <luto at mit.edu> wrote:
> On Sep 26, 2011 9:00 PM, "Daniel Vetter" <daniel.vetter at ffwll.ch> wrote:
>>
>> Only do it in the hope of resurrecting the gpu. Disable when reset is
>> disabled because it seems to tremendously increases our changes to
>> actually capture an error_state before the system goes all belly-up.
>>
>> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>> ---
>> Hi Andrew,
>>
>> Can you please apply this patch and boot your system with
>>
>
> Will do in a couple days.  I'm several thousand miles from that computer
> right now :)

No problem. Something else to try: Are you by chance running with
DMAR/VT-d enabled? If so, please disable it (either in the BIOS or
with intel_iommu=off) and see whether that works around the semaphore
hangs.

Perhaps do this before trying out the patch, doesn't require a new kernel ;-)

Thanks a lot, Daniel
-- 
Daniel Vetter
daniel.vetter at ffwll.ch - +41 (0) 79 365 57 48 - http://blog.ffwll.ch