I'm not able to boot the 64-bit live CD of either Ubuntu 13.04 or Xubuntu 12.04.2 -- I get a blank screen.
I am however able to boot Fedora 19 and successfully installed to disk
for a usable dual boot system but I'd like to get Ubuntu installed.
Any help is appreciated.

The BIOS has a single "Boot Mode" parameter as described at: https://help.ubuntu.com/community/UEFI
I tried turning that option off but it did not help.