Comment 149 for bug 359392

I still see freezes with render acceleration turned off, although I'm
not quite sure if it's the same issue that everyone else is experiencing
(I've had these freezes for at least half a year). I can reliable
reproduce the freeze by opening ~10 fullscreen windows, minimizing some
of them and then pressing Alt+Tab. I've attached a backtrace and a gpu
dump.

JesseBarnes wrote:
> I still haven't been able to reproduce this. I did notice that Albert,
> Dustin and Bryce's intel_gpu_dump output was identical though (all had
> what looked like i965 render commands in them). Some people have
> reported that using EXA greedy migration made the bug go away, I wonder
> if disabling render accel altogether would as well (ExaNoComposite true
> in xorg.conf)? Can someone who's seeing this frequently give that a
> try?
>
> So far the closest I've come to seeing this with Jaunty is by starting
> 50 instances of glxgears. That makes X pretty much unusable (all my
> windows grey out and no other rendering seems possible). That's pretty
> pathological though, so probably isn't the problem, though it does
> indicate some issues with our GPU scheduler under high load.
>