As per https://lists.ubuntu.com/archives/ubuntu-x/2011-March/001065.html you should be able to now manually install -fglrx and then install a PPA version of unity which work together.
Can someone do this install and confirm whether or not this bug still exists with that? ** Changed in: fglrx-installer (Ubuntu Natty) Status: In Progress => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/685682 Title: [fglrx] compiz crashed with SIGSEGV in nux::IOpenGLSurface::UnlockRect() -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs