This is a public service announcement for those of you who are still putting off making a G400 emergency disk. (Click on makedisk.exe in the \matrox\util folder, at least that's the default if you installed the utils at all.)
I say this because I did this early, and it has now saved my a**. To test a theory, I ran my AGP at 100mhz with 1:1 fsb, and it was stable (unlike the 150fsb/100agp combo). So, out of curiousity, I went for 110, and it booted into Windows then promptly locked up. I was then unable to even get my system to post until I reflashed the G400 BIOS. Also had to edit agpfallback in the registry to get 2x back, but that's what curiousity will get you.
I say this because I did this early, and it has now saved my a**. To test a theory, I ran my AGP at 100mhz with 1:1 fsb, and it was stable (unlike the 150fsb/100agp combo). So, out of curiousity, I went for 110, and it booted into Windows then promptly locked up. I was then unable to even get my system to post until I reflashed the G400 BIOS. Also had to edit agpfallback in the registry to get 2x back, but that's what curiousity will get you.