https://bugs.freedesktop.org/show_bug.cgi?id=107928
--- Comment #5 from Vik-T viktor@troja.ch --- @dwagner:
Thanks for your comment. I could not reproduce the error with the 3fps 1080p video on naked X. I let it run for 25 minutes without any issues.
Besides, unlike yourself, I never experienced any sort of full system crash. I can always shut down and reboot cleanly.
As I mentioned, what happens, at random, is that the screens go blank and the log shows the call trace I posted in the first message. But the system never fully crashed so far. I can usually ssh into the box. Sometimes, a restart of the desktop manager solves the issue, but more often a reboot is necessary.