Re: VDPAU testing tool
It looks like invalid commands are being sent to the GPU. Some possibilities:
a) Some form of HW issue in your system causing bus transactions or memory to become corrupted.
b) A bug in qvdpautest that's corrupting some variables inside the VDPAU driver. This is somewhat unlikely given the usage qvdpautest has seen.
c) A bug in the VDPAU driver. This seems fairly unlikely given the large volume of VDPAU users who haven't seen anything like this before.
That said, the problem is the exact same thing each time. This makes it seem less like a random HW issue.
Unfortunately, I'm not sure what can be done to investigate the problem further. Do you have different graphics cards you could try, different system could could try this graphics card in, etc.