Comment 11 for bug 385832

I'm seeing similar behaviour here. I use my laptop with an external display, and usually use the external display in its native mode (1920x1200) and disable the internal LCD. With the latest Karmic bits, 1920x1200 is no longer available, and xrandr only shows the VESA modes despite the driver having captured correct EDID (as shown in Xorg.log):

VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 550mm x 340mm
   1024x768 60.0*
   800x600 60.3 56.2
   640x480 60.0
LVDS1 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
   1680x1050 60.0* 50.0