Comment 9 for bug 260847

This problem is fixed in Ubuntu 9.04 (x11-xserver-utils 7.4+1).

Now xrandr correctly reports these resolutions for my external monitor:

Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 1400 x 1400
VGA connected 1280x1024+0+0 (normal left inverted right x axis y axis) 359mm x 287mm
   1280x1024 60.0*+ 75.0 60.0*
   1280x960 75.0 60.0
   1152x864 75.0
   1024x768 85.0 75.0 70.1 60.0
   832x624 74.6
   800x600 85.1 72.2 75.0 60.3 56.2
   640x480 85.0 75.0 72.8 66.7 59.9
   720x400 70.1