.config/x11/xbindkeysrc

   1 # Increase volume
   2 "amixer set Master 5%+"
   3     XF86AudioRaiseVolume
   4
   5 # Decrease volume
   6 "amixer set Master 5%-"
   7     XF86AudioLowerVolume
   8
   9 # Mute volume
  10 "amixer set Master toggle"
  11     XF86AudioMute
  12
  13 # Increase backlight
  14 "xbacklight -inc 10"
  15     XF86MonBrightnessUp
  16
  17 # Decrease backlight
  18 "xbacklight -dec 10"
  19     XF86MonBrightnessDown
  20