drm: i915: "plane B assertion failure, should be off on pipe B but is still active"

[Daniel Vetter]

On Mon, Jul 14, 2014 at 09:13:40AM +0200, Paul Bolle wrote:
> On Mon, 2014-07-14 at 08:56 +0200, Daniel Vetter wrote:
> > Please test the below patch, thanks.
> > -Daniel
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index 82e7d57f0a8a..f0be855ddf45 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -11914,6 +11914,7 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc)
> >  		 * ...  */
> >  		plane = crtc->plane;
> >  		crtc->plane = !plane;
> > +		crtc->primary_enabled = true;
> >  		dev_priv->display.crtc_disable(&crtc->base);
> >  		crtc->plane = plane;
> >  
> 
> Instead of the revert or on top of the revert?

Instead of the revert as an attempt at a proper bugfix. If it doesn't work
my theory about what's going on on your machine is all wrong ;-)
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch