Comment 6 for bug 366687

I have an identical experience to what Andriy described. If fglrx is loaded, attempting to run gnome-display-properties (via System->Preferences->Display or the command line) causes Xorg to use 100% of one core (on a Core 2 DUO E8400). I'm able to reproduce the problem with fglrx on a ATI Radeon 2400 HD and an Radeon 3450 HD, on two different machines. The problem occurs regardless of whether one is running Compiz or Metacity, and the only solution seems to be to reboot the machine. Kernel logs contain nothing useful from the fglrx module.

I realize the implications of using a binary driver, but if there's a good place to document this particular failure, it should probably be documented.