This seems to be fixed in the latest version of Ubuntu:
$ dpkg -s xserver-xorg-video-ati | grep Version Version: 1:6.7.197-1ubuntu1 $ dpkg -s x11-xserver-utils | grep Version Version: 7.3+2 $ xrandr Screen 0: minimum 320 x 200, current 2880 x 1200, maximum 2880 x 1200 VGA-0 connected 1600x1200+0+0 (normal left inverted right x axis y axis) 408mm x 306mm 1600x1200 60.0*+ 59.9 1280x1024 84.8 75.0 59.9 1280x960 59.9 1152x864 75.0 1024x768 84.9 75.1 60.0 832x624 74.6 800x600 84.9 60.3 640x480 84.6 75.0 60.0 720x400 70.1 DVI-0 connected 1280x1024+1600+0 (normal left inverted right x axis y axis) 360mm x 290mm 1280x1024 75.0*+ 59.9 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 75.0 72.8 66.7 60.0 720x400 70.1 LVDS connected (normal left inverted right x axis y axis) 1400x1050 59.9 S-video disconnected (normal left inverted right x axis y axis)
This seems to be fixed in the latest version of Ubuntu:
$ dpkg -s xserver- xorg-video- ati | grep Version
Version: 1:6.7.197-1ubuntu1
$ dpkg -s x11-xserver-utils | grep Version
Version: 7.3+2
$ xrandr
Screen 0: minimum 320 x 200, current 2880 x 1200, maximum 2880 x 1200
VGA-0 connected 1600x1200+0+0 (normal left inverted right x axis y axis) 408mm x 306mm
1600x1200 60.0*+ 59.9
1280x1024 84.8 75.0 59.9
1280x960 59.9
1152x864 75.0
1024x768 84.9 75.1 60.0
832x624 74.6
800x600 84.9 60.3
640x480 84.6 75.0 60.0
720x400 70.1
DVI-0 connected 1280x1024+1600+0 (normal left inverted right x axis y axis) 360mm x 290mm
1280x1024 75.0*+ 59.9
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0
720x400 70.1
LVDS connected (normal left inverted right x axis y axis)
1400x1050 59.9
S-video disconnected (normal left inverted right x axis y axis)