Just want to thank everyone for the helpful suggestions and links so far. I've tried several approaches from the resources I've been given but nothing is working. This could of course be due to incompetence on my part. ;-) But it certainly doesn't help that ATI mysteriously revoked their latest driver release either. So I'm going to try doing it the hard way: recompiling my kernel, X server, the DRI module, and the ATI drivers from scratch with explicit support for each other. Hope I get all the compile options right. I might royally hose my system, but I think I've already done that anyhow. ;-) If that doesn't work, I'm permanently banishing all ATI products to my Win-only boxes and buying Nvidia for my Linux boxes from now on. In fact I recommend against buying ATI for any Linux user currently in the market for a video card; clearly the support just isn't there yet. And I sense that I'm not alone on this. ;-)