hey.. so I've got a Cirrus Logic 5446 video card on a Avitron KDS monitor..and I can't go to any higher resolution than 800x600 without it degrading to 256 colors. is this strictly my video card's deal? no solution?
try upgrading the drivers and try direct x9... not to great with video cards but, i'd try that... i mean i'm running a radeon 7000 and i can go to way higher resolutions...
Can your monitor support high colors at the higher resolution? Maybe the card can see that your monitor cant support higher colors at higher resolutions and decrease's the colors so it can support them...
my TNT2 drops to 16-bit when I got to 2048x1536
I'd say it might either be the amount of VRAM you have (I have 32MB on mine), or the GPU is simply not fast enough for the higher resolutions with 16-bit or more.