I am trying to install Ubuntu 12.04 in my new machine (with motherboard Asus M5A97, AMD64 3.1GHz) and after the intro menu I select install (or run without install) and I only get a black screen after that. I think it's related to the UEFI boot mode but I am not sure. I tried to install Ubuntu 11 as well and a get a similar problem (although it starts to show some install information but then it stops again). I have also tried Scientific Linux. No success.
When I installed Windows 7 .. had no problems.