I'm the owner of a 6950 2GB card and am wondering if it is possible to set the card to a simple 1920x1200x24/32bpp w/linear frame buffer, without having to dig into the whole AtomBIOS/linux driver world. The VESA implementation presented at Int 10h is very minimalistic and doesn't give any such mode. However, it's obviously possible since the card is outputting it right now.
This mode setting would occur totally outside the scope of any operating system, i.e. bootloader stage.