xbmc@atv:~$ DISPLAY=:0.0 xrandr
Screen 0: minimum 320 x 240, current 1280 x 720, maximum 1920 x 1080
default connected 1280x720+0+0 0mm x 0mm
   1920x1080      50.0     60.0     24.0
   1680x1050      60.0
   1600x1024      60.0
   1440x900       60.0
   1400x1050      60.0
   1280x1024      60.0
   1280x960       60.0
   1280x800       60.0
   1280x768       60.0
   1280x720       60.0     50.0*
   1152x768       55.0
   1024x768       60.0
   840x525        60.0
   800x600        60.0     56.0
   800x512        60.0
   720x576        50.0
   720x480        60.0
   720x450        60.0
   640x512        60.0
   640x480        60.0
   640x400        60.0
   640x384        60.0
   576x384        55.0
   512x384        60.0
   400x300        60.0     56.0
   320x240        60.0