$ xrandr
Screen 0: minimum 8 x 8, current 2390 x 768, maximum 16384 x 16384
DVI-I-0 connected 1024x768+1366+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
VGA-0 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 410mm x 230mm
   1366x768       59.8*+
   1280x1024      75.0     60.0
   1280x960       60.0
   1280x800       59.8
   1280x720       60.0
   1152x864       75.0
   1024x768       75.0     70.1     60.0
   800x600        75.0     72.2     60.3     56.2
   640x480        75.0     72.8     59.9
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)