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SubjectRe: i915 pipe A assertion failure (expected on, current off)
On Sat, Sep 21, 2013 at 05:48:42PM +0200, Daniel Vetter wrote:
> On Sat, Sep 21, 2013 at 5:29 PM, Meelis Roos <mroos@linux.ee> wrote:
> >> Tried 3.11-rc7 on Thinkpad X30 (first 3-11-rc tried on this hw). Works
> >> but i915 gives strange assertion failure with WARNING stack trace. This
> >> is new since 3.10.
> >
> > It is still there with 3.12-rc1 but now I git around to bisecting it.
> > This is the commit that introduces the warning.
> >
> > commit 9f11a9e4e50006b615ba94722dfc33ced89664cf
> > Author: Daniel Vetter <daniel.vetter@ffwll.ch>
> > Date: Thu Jun 13 00:54:58 2013 +0200
> >
> > drm/i915: set up PIPECONF explicitly for i9xx/vlv platforms
>
> My apologies for not responding to your first report, fell through the
> cracks somehow. Can you please boot with drm.debug=0xe, reproduce the
> WARN and grab the full dmesg (please make sure everything from boot-up
> is in there). That's usually enough to figure out what's going wrong
> here.

I'd say it's a simple matter of forgetting about QUIRK_PIPEA_FORCE in
i9xx_set_pipeconf().

--
Ville Syrjälä
syrjala@sci.fi
http://www.sci.fi/~syrjala/
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