$ xrandr -q
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 8192 x 8192
DVI-I-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 521mm x 293mm
   1920x1080      60.0*+
   1680x1050      60.0
   1600x900       60.0
   1440x900       59.9
   1280x1024      75.0     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 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm
   1920x1080      60.0*+
   1680x1050      60.0
   1600x900       60.0
   1440x900       59.9
   1280x1024      75.0     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
TV-0 disconnected (normal left inverted right x axis y axis)
DVI-I-2 disconnected (normal left inverted right x axis y axis)
DVI-I-3 disconnected (normal left inverted right x axis y axis)