Created attachment 116620 [details] AIGLX segfault I was watching youtube on fullscreen and X restarted. I got a segfault.
That stacktrace is unhelpful. Recompile the ddx as in bug 91036 and report back.
There is a very good chance this was fixed by commit 41f401ae27ee753d66aae341be60b27167bc5b62 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Sat Jun 27 20:24:45 2015 +0100 sna/dri2: Early return for empty DRI2CopyRegion but without debug symbols we have no idea. Please reopen if you can provided the extra information required.
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