Re: [Intel-gfx] [PATCH] drm/i915: Disable all outputs early, before KMS takeover

Pekka Enberg
2011-04-01T11:51:44Z

On Fri, Apr 1, 2011 at 2:44 PM, Daniel Vetter <daniel@ffwll.ch> wrote:
> On Tue, Mar 29, 2011 at 11:46:29AM +0100, Chris Wilson wrote:
>> If the outputs are active and continuing to access the GATT when we
>> teardown the PTEs, then there is a potential for us to hang the GPU.
>> The hang tends to be a PGTBL_ER with either an invalid host access or
>> an invalid display plane fetch.
>
> This patch seems to fix resume flakiness (that recently developed
> complete reliability in hanging the gpu) on my i855gm. Captured
> error_states look as described here. Latest -staging merged into latest
> -linus is now again fully reliable at s/r.
>
> Tested-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Unfortunately I get a blank screen with after boot:

Nacked-by: Pekka Enberg <penberg@kernel.org>