david@david-laptop:~$ xrandr --query
Screen 0: minimum 320 x 200, current 3200 x 900, maximum 32767 x 32767
LVDS1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 382mm x 214mm
   1600x900       60.3*+
   1440x900       59.9  
   1360x768       59.8     60.0  
   1152x864       60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
LVDS-1-1 connected 1600x900+1600+0 0mm x 0mm
   1600x900       60.3*+
   1440x900       59.9  
   1280x854       59.9  
   1280x800       59.8  
   1280x720       59.9  
   1152x768       59.8  
   1024x768       59.9  
   800x600        59.9  
   848x480        59.7  
   720x480        59.7  
   640x480        59.4  
HDMI-1-0 disconnected
VGA-1-1 disconnected
  1600x900 (0x49)  110.0MHz
        h: width  1600 start 1648 end 1680 total 2000 skew    0 clock   55.0KHz
        v: height  900 start  903 end  909 total  912           clock   60.3Hz