xrandr

Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 connected primary 1024x768+0+0 (normal left inverted right x axis y axis) 520mm x 320mm
   1024x768      60.00*+  85.00
   848x480       60.00