# xrandr --current
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 400, current 1400 x 1050, maximum 1400 x 1050
default connected primary 1400x1050+0+0 0mm x 0mm
   1400x1050      0.00*
   640x480        0.00
   720x400        0.00