i915: glxgears causes GPU hang [was: mmotm 2010-09-22-16-11 uploaded]

[Chris Wilson]

On Mon, 27 Sep 2010 11:36:56 +0200, Jiri Slaby <jirislaby at gmail.com> wrote:
> On 09/23/2010 01:12 AM, akpm at linux-foundation.org wrote:
> > The mm-of-the-moment snapshot 2010-09-22-16-11 has been uploaded to
> 
> Hi, when I run glxgears in this kernel, X crashes. It happens also with
> older releases and I don't know what is the first defunct.
> 
> In the log there is:
> [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
> [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5
> (awaiting 2 at 0)

Hmm, that's a serious error as it appears the chip wasn't initialised
correctly and failed to start. G33, this is likely to be
https://bugzilla.kernel.org/show_bug.cgi?id=16891
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre