xrandr
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP2-1 disconnected (normal left inverted right x axis y axis)
DP2-1-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 287mm
   1920x1080     60.00*+
   1680x1050     59.95  
   1680x945      60.02  
   1400x1050     74.87    59.98  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      74.98    59.89  
   1280x960      60.00  
   1366x768      59.79  
   1360x768      60.02  
   1280x800      74.93    59.81  
   1152x864      75.00  
   1280x768      74.89    59.87  
   1280x720      60.00  
   1024x768      75.03    70.07    60.00  
   1024x576      59.97  
   800x600       72.19    75.00    60.32    56.25  
   848x480       60.00  
   640x480       75.00    72.81    59.94  
   720x400       70.08  
DP2-1-2 disconnected (normal left inverted right x axis y axis)
DP2-2 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 510mm x 287mm
   1920x1080     60.00*+
   1280x1024     75.02    60.02  
   1152x864      75.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   640x480       75.00    59.94  
   720x400       70.08  
DP3 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
gfx@gfx-Skylake-Client-platform:~$