On Sun, Oct 13, 2013 at 10:43:49AM +0100, Chris Wilson wrote: > > > > My X server was crashing when playing video, and I wrote a patch to fix > > > > it. Please find the background and the patch at > > > > http://bugs.debian.org/724944 . > > Ok, I can see the allocation failure that leads to the crash: > > commit f9a18c9f38d09c145eb513ca989966dc135c1e9b > Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Date: Sun Oct 13 10:36:35 2013 +0100 This does indeed stop the server from crashing, but actually makes the problem worse: it used to play video for a few minutes and then crash when trying. With my patch it would play video for a few minutes and then present black screens when trying. With your patch, it presents black screens from the start. I must say I'm not entirely sure if the backtrace I sent you is a "typical" case; I managed to crash it sooner than usual, so perhaps it wasn't the bug that I triggered before. It did stop the crashing however. > However, that still leaveas the question as to how you ended up being > unable to allocate bo... > > You can watch /sys/kernel/debug/dri/0/i915_gem_objects (or just use > intel-gpu-overlay) and see if there is an object leak. I don't have enough knowledge about the internals to know how that works. I can see the file if I mount the debugfs, but what am I looking for? I don't seem to have intel-gpu-overlay on my system; does it make sense to install it? If so, where do I get it? While looking for it I did find and try intel-gpu-time, and noticed that it always reports the gpu 100% busy, even when running intel-gpu-time sleep 5 from a linux virtual terminal (so not even X is displayed). Is that normal? Thanks, Bas
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