linux-kernel - Re: [Intel-gfx] 3.6-rc1 breaks my laptop graphics (intel)

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Message-ID: <20120812190500.GI5575@phenom.ffwll.local>
Date:	Sun, 12 Aug 2012 21:05:00 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	Paulo Zanoni <paulo.r.zanoni@...el.com>,
	Kamal Mostafa <kamal@...onical.com>,
	Carsten Emde <C.Emde@...dl.org>,
	Eugeni Dodonov <eugeni.dodonov@...el.com>,
	David Airlie <airlied@...ux.ie>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	intel-gfx@...ts.freedesktop.org
Subject: Re: [Intel-gfx] 3.6-rc1 breaks my laptop graphics (intel)

On Sun, Aug 12, 2012 at 11:48:02AM -0700, Greg KH wrote:
> On Sun, Aug 12, 2012 at 11:33:05AM -0700, Greg KH wrote:
> > On Sun, Aug 12, 2012 at 08:25:31PM +0200, Daniel Vetter wrote:
> > > On Sun, Aug 12, 2012 at 11:21:57AM -0700, Greg KH wrote:
> > > > Hi Daniel.
> > > > 
> > > > The 3.6-rc1 kernel breaks my laptop, booting to a black screen when the
> > > > i915 driver initializes itself.  I bisected this down to commit
> > > > 24ded204429fa0f5501d37c63ee35c555c0b75ee (drm/i915: properly enable the
> > > > blc controller on the right pipe), and when I revert that, and also
> > > > a4f32fc3a37e982fffce8ec583643990ff288419 (drm/i915: don't forget the PCH
> > > > backlight registers) which depended on the first patch, my laptop works
> > > > just fine.
> > > > 
> > > > Below is the combined revert.
> > > > 
> > > > Any thoughts?  Any patch I can try out?
> > > 
> > > http://cgit.freedesktop.org/~danvet/drm-intel/commit/?h=drm-intel-fixes&id=770c12312ad617172b1a65b911d3e6564fc5aca8
> > > 
> > > which is already merged to drm-intel-fixes.
> > 
> > Ah, thanks, I'll go try that out, the Subject: line didn't draw my
> > attention to it being the same problem as mine :)
> 
> Yes, that works, many thanks.
> 
> I'm guessing this is going to be going to Linus soon, right?

Yeah, I'm stalling a bit for test results on an edp regression fixer that
affects the new macbook air, but I'll send current -fixes to Dave in a few
days.

Thanks for reporting this regression,
Daniel
-- 
Daniel Vetter
Mail: daniel@...ll.ch
Mobile: +41 (0)79 365 57 48
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