Whenever I plug in an LCD LG monitor via VGA to my notebook while running X it never gets detected.
if it is plugged, enter
$ xranddr
It will list out the connected/disconnected outputs:
Screen 0: minimum 320 x 200, current 2340 x 1440, maximum 8192 x 8192 LVDS-1 connected 1440x900+0+0 (normal left inverted right x axis y axis) 303mm x 190mm 1440x900 60.0*+ 50.0 1152x864 60.0 1024x768 59.9 800x600 59.9 640x480 59.4 720x400 59.6 640x400 60.0 640x350 59.8 VGA-1 connected 900x1440+1440+0 left (normal left inverted right x axis y axis) 408mm x 255mm 1440x900 59.9*+ 75.0 1280x1024 76.0 75.0 72.0 60.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 640x480 72.8 75.0 66.7 60.0 720x400 70.1 640x350 70.1 DVI-D-1 disconnected (normal left inverted right x axis y axis)