[Intel-gfx] [Bug 51061] GPU Hang using VAAPI

[Angela]

> From: Daniel Vetter [mailto:daniel.vetter at ffwll.ch] On Behalf Of Daniel
> Vetter
> Sent: Wednesday, 20 June, 2012 21:29
> To: Angela
> Cc: 'Daniel Vetter'; intel-gfx at lists.freedesktop.org
> Subject: Re: [Intel-gfx] [Bug 51061] GPU Hang using VAAPI
> 
> On Wed, Jun 20, 2012 at 09:21:07PM +0200, Angela wrote:
> > > > Updated xorg-edgers, updated kernel (>3.5-rc3), merged
> > > > drm-intel-next-queued. "Fixed" the two conflicts, are they OK ?
> > > >
> > > > No console, X starts in Vesa Mode.
> > > >
> > > > Added the new kernel dmesg, my "fixed" conflict's and a good
> > > > kernel
> > > dmesg.
> > > >
> > > > What's next.
> > >
> > > Looks like the kernel couldn't communicate with the chip at all, all
> > > reads
> > just
> > > fail. I've pushed out a for-angela branch to my kernel playground at
> > >
> > > http://cgit.freedesktop.org/~danvet/drm
> > >
> > > Which contains recent drm-intel-next-queued with rc3 merged. That
> > > one boots at least correctly here. Although your merge resolution
> > > looks
> > correct,
> > > so I have no idea what exactly went wrong.
> > > -Daniel
> > >
> >
> > Used head kernel and merged for-angela. Console and X are fine now,
> > for drm dmesg see below.
> >
> > > contains recent drm-intel-next-queued with rc3 merged
> > I could also have taken for-angela alone, does it matter ?
> >
> > Still have the VAAPI problem and still cannot grab error_state
> >
> > [   416.677] (WW) intel(0): flip queue failed: Input/output error
> >
> > cat: /sys/kernel/debug/dri/0/i915_error_state: Cannot allocate memory
> >
> > With ppa kernel I didn't had a console and the system hung (could not
> > ssh), will you add the "couldn't communicate with the chip at all"
> > patch to drm-intel-next-queued, so I could check the error_state once
> > again with the generated ppa 3.4 kernel. Will we be more lucky ? When
> > will it be ready to try ?
> 
> It should all work, but something is seriously broken for you. Could you
bisect
> where this started to blow up for you maybe?

I never had VAAPI running,  I reported 24-mar-2012 for the first time.
What you mean VAAPI or to fetch the error_state ?

I can bisect, where to start ? Which sources/kernel ? 

Angela