I can confirm that this bug is still present in natty. When connecting an external screen, this screen shows up twice, once as "Unknown" and once showing as the actual product name, making it impossible to enable it using xrandr or gnome-display-properties.
** Changed in: xserver-xorg-video-ati (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/505300 Title: Radeon X300 detect too many screens -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs