https://bugs.freedesktop.org/show_bug.cgi?id=88152
--- Comment #38 from Arthur Marsh arthur.marsh@internode.on.net --- Sorry for the delay in replying, I tried a few more tests first.
The bad news is that even with a kernel build that didn't lock up on one complete playback of the video, even when trying skipping during the video, on a subsequent reboot and run I'd experience a lock-up.
The good news is that with current git head, even though I can experience lock-ups, I can restart kdm successfully following a lock-up. Prior to 4.0.0 kernel I needed to do a power down restart to undo the lock-up.
Besides Linus git head kernel built with current Debian experimental gcc-5, the other packages installed include:
libdrm - related packages at version 2.4.60-2 libvdpau1:amd64 0.9-1 mesa packages 10.4.2-2 xserver-xorg packages 1:7.5.0-1
At one stage I wanted to be sure that it wasn't a problem with the 3850HD video card so I removed it and used the onboard Radeon 3200HD and experienced the same problems.