And, just like that, all the core image goodness has returned!
I'm having a weird problem with my secondary display, though-a generic Acer 1680x1050 flat panel LCD. It has both DVI and VGA in, and I've used both inputs extensively(the Quicksilver has had a lot of different video cards in it, so I use whichever input matches the output on the card).
In any case, I was using a GEForce 4MX, which has VGA out and of course had it connected via VGA.
When I installed the Radeon card, I switched over to the DVI input. The computer recognized the monitor being plugged in-it read the model and resolution correctly-but gave no image on the monitor.
I had a brand new in package, never opened DVI cable laying on my desk, so I tried swapping cables. I still had no luck.
Finally, I plugged a DVI-to-VGA converter into the card, and then plugged in the monitor via VGA. It's now working.
I guess maybe the DVI input on the monitor is dead-at least that's all I can figure. I was testing the Radeon card last night in another Quicksilver(my dual 800). I only used the DVI output directly into a 17" Dell LCD, and it worked fine.
Monitors are cheap enough these days that maybe I'll just break down and buy a nice 1920x1080 LED to use with my Quicksilver...