$ sudo ddcprobe 
vbe: VESA 3.0 detected.
oem: Intel(r)915GM/910ML/915MS Graphics Chip Accelerated VGA BIOS
vendor: Intel Corporation
product: Intel(r)915GM/910ML/915MS Graphics Controller Hardware Version 0.0
memory: 7872kb
mode: 1280x1024x256
mode: 1280x1024x64k
mode: 1280x1024x16m
mode: 1024x768x256
mode: 1024x768x64k
mode: 1024x768x16m
mode: 640x480x16m
mode: 800x600x64k
mode: 800x600x16m
mode: 640x480x256
mode: 800x600x256
mode: 640x480x64k
edid: 
edidfail



$ xrandr # deconnected
Screen 0: minimum 640 x 400, current 1680 x 1050, maximum 1680 x 1050
default connected 1680x1050+0+0 0mm x 0mm
   1680x1050      60.0* 
   1400x1050      70.0     60.0  
   1280x1024      75.0     60.0  
   1440x900       60.0  
   1280x960       60.0  
   1280x800       60.0  
   1152x864       75.0  
   1280x768       60.0  
   1024x768       75.0     70.0     60.0  
   832x624        75.0  
   800x600        75.0     72.0     60.0     56.0  
   640x480        75.0     73.0     67.0     60.0  
   720x400        70.0