Re: [Intel-gfx] [PATCH] drm/i915: Fix the PPT fdi lane bifurcate state handling on ivb

2013-10-29 Thread Daniel Vetter
On Tue, Oct 29, 2013 at 02:46:10PM +0200, Ville Syrjälä wrote: > On Tue, Oct 29, 2013 at 12:04:08PM +0100, Daniel Vetter wrote: > > Originally I've thought that this is leftover hw state dirt from the > > BIOS. But after way too much helpless flailing around on my part I've > > noticed that the act

Re: [Intel-gfx] [PATCH] drm/i915: Fix the PPT fdi lane bifurcate state handling on ivb

2013-10-29 Thread Ville Syrjälä
On Tue, Oct 29, 2013 at 12:04:08PM +0100, Daniel Vetter wrote: > Originally I've thought that this is leftover hw state dirt from the > BIOS. But after way too much helpless flailing around on my part I've > noticed that the actual bug is when we change the state of an already > active pipe. > > F

[Intel-gfx] [PATCH] drm/i915: Fix the PPT fdi lane bifurcate state handling on ivb

2013-10-29 Thread Daniel Vetter
Originally I've thought that this is leftover hw state dirt from the BIOS. But after way too much helpless flailing around on my part I've noticed that the actual bug is when we change the state of an already active pipe. For example when we change the fdi lines from 2 to 3 without switching off o