xrandr
Screen 0: minimum 8 x 8, current 3072 x 1152, maximum 16384 x 16384
DVI-I-0 connected primary 2048x1152+0+0 (normal left inverted right x axis y axis) 510mm x 287mm
   2048x1152      59.9*+
   1680x1050      60.0  
   1440x900       59.9  
   1280x1024      60.0  
   1280x960       60.0  
   1280x800       59.8  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA-0 connected 1024x768+2048+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768       60.0*+
   1360x768       60.0     59.8  
   1152x864       60.0  
   800x600        72.2     60.3     56.2  
   680x384        60.0     59.8  
   640x480        59.9  
   512x384        60.0  
   400x300        72.2  
   320x240        60.1  
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)