Comment 36 for bug 351186

Confirmed here as well. AMD64 with HD3600 (vendor: 1002 device: 9596).

Visual effects were enabled at normal after fresh install with fglrx installed via "restricted drivers" GUI. Rebooted just in case, visual effects still running. Slow window restore/maximize/unmaximize.

From Appearances GUI I disabled visual effects and could not re-enable. It gives a generic error "Desktop effects could not be enabled."

If I run compiz from terminal window, it works. Still have slow window restore/maximize/unmaximize.

It does give this warning when ran from command line:
/usr/bin/compiz.real (video) - Warn: No 8 bit GLX pixmap format, disabling YV12 image format