Comment 4 for bug 1176647

The bug can occur as early as 1 minute after boot up. I tried watching a video in mplayer. Several times the system locked up which I handled with a hard reset. Once I just started mplayer, skipped to the correct position in the video and could only watch 5 seconds more as the system froze again.
When the system locks up during video playback, not only the picture freezes but also the playback is stopped as I cannot hear any audio which I would be supposed to hear if the playback would continue (even with broken/frozen video output). On the other hand when just playing music in mplayer, a lockup does not stop mplayer from continious audio playback.
I therefore assume that the video playing mplayer is stopped due to its "feedback" (or possibly due to no response) from the XVideo extension (and the underlying driver). Since the mplayer in pure audio mode has no connection to the X11 system I can continue without problems.