You might try the latest version of the fglrx driver and see if it fixes the problem.
Can you enable the hardy-proposed and hardy-updates repositories, install EnvyNG so as to install the latest release of the driver? If you can still reproduce the problem then you should report the problem to ATI: http://ati.cchtml.com/ ** Changed in: linux-restricted-modules-2.6.24 (Ubuntu) Status: Triaged => Incomplete -- [fglrx] Using fglrx causes excessive hardware interrupts and an extremely slow system https://bugs.launchpad.net/bugs/206337 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