[mythtv-users] AT5IONT-I unable to use vdpau

[Andrew Congdon]

 > The frontend is a Asus AT5IONT-I board, with a d525 CPU and 2 x 2GB
 > SODIMM RAM (800Mhz)

I used 1x 2GB 1066 and that seems plenty since the video memory is 
dedicated. The memory controller is single channel right?

 > Even with quite simple SD recordings, this frontend is unable to do a
 > proper playback using VDPAU!

Mine wasn't as bad as yours but I did find some pausing which I thought 
might be associated with IRQ sharing so I tried the latest Beta nvidia 
driver which allows MSI and that seems much better. It can now play full 
HD video with the VDPAU high quality profile and no other settings.

 > The CPU is close to idle all the time, and I have no idea what is causing
 > this!

I found more problems with this. I was using Fedora 14 and couldn't get 
the CPU to do frequency scaling until I tried the userspace governor 
with the p4_clockmod module. Nevertheless I still needed to add a slim 
100mm fan to control the GPU temps, the CPU(s) is mostly idle.