Ronald G. Minnich wrote:
ok, I hate to say this, but I think you should run linuxbios without the vga stuff, boot linux, and run that vgabios under testbios and see if that is better. This will let you know if the vgabios is doing something really weird.
If you have the space. Try X >= 4.3 as well and use: option "InitPrimary" "true" in the Screens section. It's my experience that on some cards X will bring the card to life when testbios won't.