I had the black screen problem on a similiar configuration as well. 8-core Mac Pro, Apple Cinema Display, 7.10 final installed on the hard drive.
The solution is to remove the "splash" boot option from whatever kernel image your booting from (press "e" on top of the image in grub, remove the word "splash", press ESC and then "b" to boot - this is from the top of my head, hope it's right). Also, check out http://macprolinux.blogspot.com/ , there's a few more articles about Ubuntu on the Mac Pro. -- 8-core Mac pro: problems in 7.04 and 7.10rc https://bugs.launchpad.net/bugs/152701 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs