$ xrandr
Screen 0: minimum 320 x 200, current 2416 x 1680, maximum 8192 x 8192
VGA-0 connected 1050x1680+0+0 left (normal left inverted right x axis y axis) 474mm x 296mm
   1680x1050     59.95*+
   1280x1024     75.02    60.02
   1152x864      75.00
   1024x768      75.08    60.00
   800x600       75.00    60.32
   640x480       75.00    60.00
   720x400       70.08
HDMI-0 disconnected (normal left inverted right x axis y axis)
LVDS connected primary 1366x768+1050+0 (normal left inverted right x axis y axis) 345mm x 194mm
   1366x768      59.64*+  50.00
   1280x720      59.86
   1152x768      59.78
   1024x768      59.92
   800x600       59.86
   848x480       59.66
   720x480       59.71
   640x480       59.38

$ xrandr
Screen 0: minimum 320 x 200, current 1050 x 1680, maximum 8192 x 8192
VGA-0 connected 1050x1680+0+0 left (normal left inverted right x axis y axis) 474mm x 296mm
   1680x1050     59.95*+
   1280x1024     75.02    60.02
   1152x864      75.00
   1024x768      75.08    60.00
   800x600       75.00    60.32
   640x480       75.00    60.00
   720x400       70.08
HDMI-0 disconnected (normal left inverted right x axis y axis)
Screen 1: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
LVDS connected primary 1366x768+1050+0 (normal left inverted right x axis y axis) 345mm x 194mm
   1366x768      59.64*+  50.00
   1280x720      59.86
   1152x768      59.78
   1024x768      59.92
   800x600       59.86
   848x480       59.66
   720x480       59.71
   640x480       59.38