[Bug 86268] [BSW Bisected] eDP goes black after running tesdisplay

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86268

--- Comment #12 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Li Xu from comment #10)
> I finished the bisect, the result is following:
> baa4e575d6a18dcd6f2e622784aa16ab24024f09 is the first bad commit
> commit baa4e575d6a18dcd6f2e622784aa16ab24024f09
> Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Date:   Mon Oct 27 16:07:32 2014 +0200
> 
>     drm/i915: Enable pipe-a power well on chv

The problems caused by that commit should be fixed by:

commit afd6275dd12381a7bd3750c125b3b68b5f8b03ca
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date:   Thu Oct 30 19:43:03 2014 +0200

    drm/i915: Reinit display irqs and hpd from chv pipe-a power well

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