I'm also having this issue, and from the posts I've seen on ubuntuforums, there are quite a few people running into this problem, as well.
Everything seems to install just fine, but it appears that the kernel module doesn't load when the xorg driver loads...so you have to do a modprobe and restart X to get OpenGL. -- Module fglrx isn't loaded https://launchpad.net/bugs/63912 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs