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

[Jarod Wilson]

On Feb 27, 2011, at 4:45 PM, Andrew Congdon wrote:

>> 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.

Um. The non-mobile Atom procs don't support frequency scaling. At all.
Period. You're not actually doing freq scaling. Clock throttling, maybe,
but that's ill-advised.

http://codemonkey.org.uk/2009/01/18/forthcoming-p4clockmod/

-- 
Jarod Wilson
jarod at wilsonet.com