[Intel-gfx] I915 regression : black screen at boot / Sandybridge Mobile (GT2)

[Jesse Barnes]

On Thu, 12 Jan 2012 20:08:59 +0100
Vincent Vanackere <vincent.vanackere at gmail.com> wrote:
> > Thanks for the report... do you also have:
> >
> > commit 7a4198664d46b87025a64530f1530ab2bea54c19
> > Author: Jesse Barnes <jbarnes at virtuousgeek.org>
> > Date:   Tue Nov 15 10:28:53 2011 -0800
> >
> >    drm/i915: don't disable a PCH DPLL that's in use
> >
> >
> > commit d8e70a254d8f2da141006e496a51502b79115e80
> > Author: Jesse Barnes <jbarnes at virtuousgeek.org>
> > Date:   Tue Nov 15 10:28:54 2011 -0800
> >
> >    drm/i915: only set the intel_crtc DPMS mode to on if the mode set
> > succeeded
> >
> > in your tree?  Those are needed to fix some 3 pipe related bugs.
> >
> > --
> > Jesse Barnes, Intel Open Source Technology Center
> >
> 
> Yes, these commits were present. To double-check I just tested the latest
> tip at a429638cac1e5c656818a45aaff78df7b743004e and the problem is still
> there.

Stefan, you have the same machine?  I wonder if it's an eDP config; my
t420 here works ok with current bits, but it uses LVDS.

-- 
Jesse Barnes, Intel Open Source Technology Center
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