xrandr
Screen 0: minimum 8 x 8, current 2390 x 768, maximum 32767 x 32767
LVDS1 connected 1366x768+1024+0 (normal left inverted right x axis y axis) 309mm x 173mm
   1366x768      60.10*+
   1024x768      60.00
   800x600       60.32    56.25
   640x480       59.94
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
VIRTUAL2 disconnected (normal left inverted right x axis y axis)
VIRTUAL3 disconnected (normal left inverted right x axis y axis)
VIRTUAL4 disconnected (normal left inverted right x axis y axis)
VIRTUAL5 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   VIRTUAL5.641-1920x1080  60.00
   VIRTUAL5.642-1920x1080  50.00
   VIRTUAL5.643-1680x1050  59.95
   VIRTUAL5.644-1600x1200  60.00
   VIRTUAL5.645-1440x900  59.89
   VIRTUAL5.646-1280x1024  75.02
   VIRTUAL5.647-1280x1024  60.02
   VIRTUAL5.648-1280x960  60.00
   VIRTUAL5.649-1280x800  59.81
   VIRTUAL5.650-1280x720  60.00
   VIRTUAL5.651-1280x720  50.00
   VIRTUAL5.652-1152x864  75.00
   VIRTUAL5.653-1024x768  75.03
   VIRTUAL5.654-1024x768  70.07
   1024x768      60.00*
   VIRTUAL5.656-800x600  75.00
   VIRTUAL5.657-800x600  72.19
   800x600       60.32    56.25
   VIRTUAL5.660-720x576  50.00
   VIRTUAL5.661-720x480  59.94
   VIRTUAL5.662-640x480  75.00
   VIRTUAL5.663-640x480  72.81
   640x480       59.94
VIRTUAL6 disconnected (normal left inverted right x axis y axis)
VIRTUAL7 disconnected (normal left inverted right x axis y axis)
VIRTUAL8 disconnected (normal left inverted right x axis y axis)
VIRTUAL9 disconnected (normal left inverted right x axis y axis)