Quote from this wikipage: http://wiki.linuxmce.org/index.php/ASUS_M2A-VM
20080214: LinuxMCE 0710b3 With the exception of MythTV not working with the onboard x1250's drivers, everything went pretty smoothly installing a system based on this motherboard as a diskless MD. Even the S/PDIF on the riser card worked and I was able to use AC3 passthrough on it. UI2 with masking (medium) works well. -- Venom986
This card has much of the same components:
Northbridge: AMD 690G
Southbridge: ATI SB600
Graphics: ATI Radeon X1250
So if you are going to use LinuxMCE as an Hybdrid running VDR then it should work. But no promises!
Also from the wiki:
This motherboard has NOT YET been confirmed to fully work with LinuxMCE properly (or vice versa) by anyone. Do NOT buy it just because you saw it here, you have been warned.
Edit: Anyone tried this? http://www.kvaes.be/mythtv/the-unofficial-guide-to-getting-your-tv-out-working-on-an-ati-x1250/