[3.4 regression] [bisected] DisplayPort fails to come on

Wouter M. Koolen W.M.Koolen-Wijkstra at cwi.nl
Thu Jun 14 10:14:43 PDT 2012


On 06/14/2012 03:48 PM, Wouter M. Koolen wrote:
> In the mean while I will redo the bisect. 
Hi guys,

I did a bisect on the actual problem (and not on the maybe-related 
second error message). It results in 
092945e11c5b84f66dd08f0b87fb729715d377bc:

Author: Adam Jackson <ajax at redhat.com>  2011-07-26 20:39:45
Committer: Daniel Vetter <daniel.vetter at ffwll.ch>  2012-01-17 15:46:56
Parent: 6919132e7a307b1f181d7655b3ef64cc7581a5ef (drm/i915/dp: Tweak 
auxch clock divider for PCH)
Branches: linux-3.4.y, remotes/origin/linux-3.4.y, remotes/origin/master
Follows: v3.2-rc6
Precedes: v3.4-rc1

     drm/i915/dp: Use auxch precharge value of 5 everywhere

     The default in the Sandybridge docs is 5, as on Ironlake, and I have no
     reason to believe 3 would work any better.

     Signed-off-by: Adam Jackson <ajax at redhat.com>
     Acked-by: Jesse Barnes <jbarnes at virtuousgeek.org>
     Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

I guess there is your reason for 3 :)

Any advice on how to proceed would be very helpful.

Cheers,

Wouter


More information about the dri-devel mailing list