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

[Daniel Vetter]

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@xxxxxxxx>
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Daniel Vetter
Mail: daniel@xxxxxxxx
Mobile: +41 (0)79 365 57 48
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