Re: MacMan Build - GA-X58A-UD3R - i7 930 - HD 5770
I have this same card in the ud3r with an i7-950 and I'm sure the DVI and DVI -> VGA works fine with the install guide. Have you tried that instead of the HDMI or Displayport, or are all connections not displaying anything?
Just as an FYI - I tried the HDMI last night and the effect is similar to what you described where you see the bios boot and chamelwon, but it appears to go to sleep as OSX loads. It's not really asleep, just the signal isn't getting passed out properly. I believe to get that to work we'll need to try the Kabyl bootloader and test the framebuffers used (there are a couple of threads on it in the forum here and on insanelymac as well).
I'll be trying to get mine up and running over HDMI over the next few days. If I can get it running I'll post the steps. Good luck.
Update: So far the HDMI has been uncooperative to say the least in getting it working. You can see the thread I started over in the graphics section where a few of us are trying to get it up and running and so far I haven't seen anyone with a success story. Still hopeful, but I'm less optimistic than I was a few weeks ago that there's a quick solution for the non reference designs.