xrandr

# running on an i7 (Intel HD Graphics 3000)
# output of xrandr
Screen 0: minimum 320 x 200, current 3520 x 1080, maximum 8192 x 8192
eDP1 connected 1600x900+1920+0 (normal left inverted right x axis y axis) 293mm x 164mm
   1600x900       60.0*+
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 299mm
   1920x1080      60.0*+
   1600x1200      60.0
   1680x1050      60.0
   1280x1024      75.0     60.0
   1440x900       75.0     59.9
   1280x960       60.0
   1280x800       59.8
   1152x864       75.0
   1280x720       60.0
   1024x768       75.1     70.1     60.0
   832x624        74.6
   800x600        72.2     75.0     60.3     56.2
   640x480        72.8     75.0     66.7     60.0
   720x400        70.1
DP1 disconnected (normal left inverted right x axis y axis)