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

Wouter M. Koolen
2012-06-14T17:14:58Z

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@redhat.com> 2011-07-26 20:39:45
Committer: Daniel Vetter <daniel.vetter@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@redhat.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

I guess there is your reason for 3 :)

Any advice on how to proceed would be very helpful.

Cheers,

Wouter