Comment # 22 on bug 70706 from ajax at nwnk dot net

(In reply to comment #20)
> (In reply to comment #19)
> > Might be worth testing these two patches [1] [2]
> > 
> > [1] http://patchwork.freedesktop.org/patch/20458/
> > [2] http://patchwork.freedesktop.org/patch/20464/
> 
> Those patches fixed it for me.

Both of these patches are now merged to Mesa, closing.