[Intel-gfx] frequent x crashes with gen6/sna

[Daniel Vetter]

On Mon, Oct 17, 2011 at 01:58:03PM +0200, Daniel Vetter wrote:
> On Mon, Oct 17, 2011 at 01:45:28PM +0200, Dieter Mummenschanz wrote:
> > Hi Daniel,
> > 
> > first of all I've seemed to screwed up my rc6 kernel parameters causing
> > rc6 to be enabled in all my previous tests even though I thought it was
> > disbaled. Sorry for that! Some new tests with i915_enable_rc6 definately
> > being disabled didn't raise any gpu hangs no matter what I did! So rc6
> > related clock changes might have something to do with the hangs/stalls.
> > With rc6 being disabled, some opengl games, like prboom-plus however
> > show random pixel depthbuffer errors. Is this a known issue?  Regarding
> > the video streams causing the gpu hang, those are unfortunately
> > copyrighted material (i.e. Star Wars Bluray for example). The best way
> > is to play multiple hi bitrate-streams with different formats
> > simultaneously and run a free OpenGL game like prboom-plus. I'll do some
> > seaching on the web for free test streams to reproduce the hang. 
> 
> Oh, I don't want you to publish them, just check whether it's a specific
> one or more random. And maybe it helps in reproducing.
> 
> > vainfo (latest git) shows:
> > libva: libva version 0.32.0
> > libva: va_getDriverName() returns 0
> > libva: Trying to open /usr/local/lib/dri/i965_drv_video.so
> > libva: va_openDriver() returns 0
> > vainfo: VA API version: 0.32
> > vainfo: Driver version: i965 Driver 0.1
> > 
> > the player is the latest mplayer hwaccel-vaapi branch (latest git)
> > http://gitorious.org/vaapi/mplayer/commits/hwaccel-vaapi
> > console command is mplayer -vo vaapi -va vaapi stream.mkv
> > 
> > Is there any way to monitor rc6 state change, i.e. gpu/ring clock speed?
> > Maybe this helps to track down issues caused by rc6 state changes?
> 
> Ok, with have a new rc6 bug :( I think we'll attack the libva hang first,
> I have an idea for a patch.
> 
> > Anyway sorry again for the rc6 confusion.

Meh, hit send too early. No problem about the confusion, now that it's
cleared up. Can you also attach the full dmesg while I hack together a
patch for libva?

Yours, Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48