[Intel-gfx] [PATCH] drm/i915: Check whether the output is running after completing the modeswitch

[Chris Wilson]

On Tue, 29 Mar 2011 10:07:45 -0700, Eric Anholt <eric at anholt.net> wrote:
> On Tue, 29 Mar 2011 14:43:46 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> > Proof-of-concept sanity check to see if we did successfully enable the
> > pipe. Without a means of report back the error and forcibly reverting back
> > to the previous configuration, the error message is a little useless.
> 
> I still like it -- it's something that could be watched for in testing,
> at least.  Did you find that some failures to successfully program modes
> not incrementing scanlines?

The external DP at least seems to take some time before it is up and
running. Of course, that could also be an artefact of a bug within our
modesetting...
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre