[Bug 90861] [SNB/BSW/SKL bisected] black screen on DP+eDP

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90861

ye.tian <yex.tian at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #23 from ye.tian <yex.tian at intel.com> ---
(In reply to Maarten Lankhorst from comment #19)
> Created attachment 116359 [details] [review]
> Update more hw state when reading out.
> 
> Slightly improved patch.
> 
> I've noticed that vblank wasn't being setup correctly either, could you test
> this patch too?
> 
> To get rid of the fdi_lanes warning you could try to apply the patch on top
> of
> http://cgit.freedesktop.org/~mlankhorst/linux/log/?h=unify-flip-modeset ?

Test it on the latest nightly with the patch.
BSW: passed, does not have dmesg *ERROR*
SNB: passed, still have demsg *ERROR*, pleae see the dmesg info.
[drm:check_crtc_state [i915]] *ERROR* mismatch in pch_pfit.enabled (expected 0,
found 1)
SKL: Failed. please see the dmesg info.

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