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based@X:~$ xrandr
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 1366 x 1366
LVDS connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1366x768       60.1*+
   1280x720       59.9
   1152x768       59.8
   1024x768       59.9
   800x600        59.9
   640x480        59.4
HDMI-0 disconnected (normal left inverted right x axis y axis)
VGA-0 disconnected (normal left inverted right x axis y axis)