It turns out that my vgadb entry was fine and that the card I'm using (an ASUS V9400-X/TD/64, but perhaps more generally all Geforce MX4000s) doesn't do DVI output above 1280x1024. It can do analog output up to 2048x1536, but no DVI. So I can drive my 1600x1200 flat panel in analog mode (which looks surprisingly good) but not in digital.
Anyone out there using a DVI card that drives 1600x1200? I have one GeForce4 MX 440 that seems to do the trick, but I'm worried that the packaging matters as well as the chipset and the card is old enough that it's hard to find these days. Russ
