I am using HP NX7010. And I got the same issue. Later after some searching I realized that we need to add some mode lines. fglrx cannot go to the default resolution of NX 7010 without that mode lines.
Consult to http://ubuntuforums.org/showthread.php?t=274739&highlight=nx7010 for a how to ** Changed in: linux-restricted-modules-2.6.15 (Ubuntu) Status: Unconfirmed => Rejected -- Blank screen after installing fglrx https://launchpad.net/bugs/34901 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs