(In reply to Christoph Haag from comment #74)
> Well.
> 
> I have said that I used drm-next-3.18 and had these hangs.
> When I applied
> http://lists.freedesktop.org/archives/mesa-dev/2014-August/066746.html it
> did not help.
> 
> Now I am using 3.17-rc7 with that mesa patch and I do not see these hangs
> anymore. Or maybe they are these very short stutters.
> 
> Sorry if drm-next-3.18 behavior is not relevant here.
> 
> As for the num bytes moved: Does the HUD graph only accumulate everything
> that happened in the hang? If so, then the hundreds of megabytes still seem
> more than normal and the used graphs definitely show change before and after
> the hangs. Whatever you make of that...
> 
> 
> CONFIG_CMA is not enabled on either kernel.
> 
> Indeed, there's less moving of data with the rc kernel I think.
> For comparison: https://www.youtube.com/watch?v=mFaqHGle9Hg

It would be useful to know if Elemental also worked with 3.17-rc7.