correction with Beta 2: manually typing in 'nomodeset' on the command line , then allows the X to come up.
I eventually typed ' radeon.modeset=0 nomodeset ' -- New Apple iMac (Core i5) fails to boot https://bugs.launchpad.net/bugs/542660 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs