It is always usefull to do one quick driver test on many different hw/sw configurations, but right now i don't have any HD card. Anyway it is great news, so thank you Alex - even i can't try this now i know that your working results can't be bad!
Congratulations, but now that FGLRX is dropping support for the R300-R500 hardware, I'd rather like to see some improvements on this front. X still freezes the whole system after some hours (when disabling all EXA acceleration) or minutes (when not disabling them) and every seventh to tenth time I want to play a video using XV, X restarts immediately. I can imagine that playing with the latest hardware is way more fun than hammering out the dells of older code but owners of R600/R700-based cards have their FGLRX, so please deal with the remaining problems before adding more and more features to the driver.
You bet!! I use KDE4 and fglrx with an HD4670 and the 2D performance is unbelievebal bad!
Tried with the onboard 3200 and an 4670 here today. The 3200 does 100 gtkperf runs in slightly above 10 seconds; but the 4670 needs 15 for them, loosing _all_ time in the "GtkDrawingArea - Text" test. A GeForce 7600 GS took about 13s for the whole test, but on a slower CPU, if that matters a lot.