[Intel-gfx] vsync + vaapi question

[Chris Wilson]

On Thu, Dec 24, 2015 at 08:42:01PM +0100, Lukas Hejtmanek wrote:
> On Thu, Dec 24, 2015 at 07:37:18PM +0000, Chris Wilson wrote:
> > > huh, maybe it is not good idea. Had to revert it because of number of hard 
> > > lockups :(
> > > 
> > > or are there any patches I can try to fix those lockups?
> > 
> > Hard? The fault isn't in libva this time at least.
> 
> applied patch results in hard lockup when playing a movie (short sound loop
> and even sysrq keys are not working). I thought that driver would reset gpu
> eventualy but it seems to be completely dead. 

That's a kernel panic or total machine lockup. Do you have a few
different kernels you can try? Hopefully it's a recent regression.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre