sylwester@sylwester-pc:~$ xrandr -q 
Screen 0: minimum 8 x 8, current 1366 x 768, maximum 16384 x 16384
DVI-I-0 disconnected (normal left inverted right x axis y axis)
VGA-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected primary 1280x720+0+0 (normal left inverted right x axis y axis) 160mm x 90mm
   1280x720       50.0*+   60.0     59.9  
   1920x1080      60.1     60.0     50.0  
   720x576        50.0     50.1  
   720x480        59.9     60.1  
   640x480        59.9  
  1368x768_60.00 (0x2a6)   85.2MHz
        h: width  1368 start 1440 end 1576 total 1784 skew    0 clock   47.8KHz
        v: height  768 start  771 end  781 total  798           clock   59.9Hz
sylwester@sylwester-pc:~$