Re: GPU lockup CP stall for more than 10000msec on latest vanilla git

["Michel Dänzer" <michel@daenzer.net>]

On Mon, 2012-12-17 at 23:55 +0100, Markus Trippelsdorf wrote: 
> On 2012.12.17 at 23:25 +0100, Markus Trippelsdorf wrote:
> > On 2012.12.17 at 17:00 -0500, Alex Deucher wrote:
> > > On Mon, Dec 17, 2012 at 4:48 PM, Markus Trippelsdorf
> > > <markus@trippelsdorf.de> wrote:
> > > > On 2012.12.17 at 16:32 -0500, Alex Deucher wrote:
> > > >> On Mon, Dec 17, 2012 at 1:27 PM, Markus Trippelsdorf
> > > >> <markus@trippelsdorf.de> wrote:
> > > >> > As soon as I open the following website:
> > > >> > http://www.boston.com/bigpicture/2012/12/2012_year_in_pictures_part_i.html
> > > >> >
> > > >> > my Radeon RS780 stalls (GPU lockup) leaving the machine unusable:
> > > >>
> > > >> Is this a regression?  Most likely a 3D driver bug unless you are only
> > > >> seeing it with specific kernels.  What browser are you using and do
> > > >> you have hw accelerated webgl, etc. enabled?  If so, what version of
> > > >> mesa are you using?
> > > >
> > > > This is a regression, because it is caused by yesterdays merge of
> > > > drm-next by Linus. IOW I only see this bug when running a
> > > > v3.7-9432-g9360b53 kernel.
> > > 
> > > Can you bisect?  I'm guessing it may be related to the new DMA rings.  Possibly:
> > > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=2d6cc7296d4ee128ab0fa3b715f0afde511f49c2
> > 
> > Yes, the commit above causes the issue. 
> > 
> >  2d6cc72  GPU lockups
> 
> With 2d6cc72 reverted I get:
> 
> Dec 17 23:09:35 x4 kernel: ------------[ cut here ]------------

Probably a separate issue, can you bisect this one as well?


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer