You wouldn't try to shit in an overflowing toilet, would you?
Depends on how bad I had to go...
3D acceleration works, video playback works, I do not use audio over HDMI, and it is 64-bit Kubuntu that I am running.
I used to be an Nvidia bigot where Linux was concerned. My last couple builds have used ATI/AMD cards and I would say they work about as well as Nvidia these days, at least in my experience. I haven't done benchmarks to compare performance under Windows versus Linux. But, subjectively, 3D acceleration (the main reason I buy the cards) works fine under Linux, and my 5770 drives three monitors beautifully. YMMV...
Oh, and of course, to post this, I have to type extra paragraphs because
Doesn't look like it works, your post got through.
I KID, I KID!
An authority is a person who can tell you more about something than you really care to know.