Originally Posted by brainkilla
Every IGP motherboard I've ever seen had a BIOS option to turn off the on-board GPU so that separate card could be used. Please, check again in order to ascertain that you have not missed something....
Just to give comfort to the next poor soul that finds this, my Acer X1200 BIOS does not have this option, at least not that I can find (8200 IGP). It does let me disable the HDMI audio, but nothing more.
The BusId seemed to do the fix.