====== Automatically switch off speakers when headphones plugged in ======

Install input-event-daemon
<code>
wget http://flie.no-ip.org:7080/ac100/deb/input-event-daemon_0.1.3-1_armhf.deb
sudo dpkg -i input-event-daemon_0.1.3-1_armhf.deb
</code>
/etc/input-event-daemon.conf:
<file input-event-daemon.conf>
[Global]
listen = /dev/input/by-path/platform-tegra-alc5632.0-event
listen = /dev/input/event2
listen = /dev/input/event3
listen = /dev/input/event4

[Keys]
POWER = systemctl suspend
#POWER = systemctl poweroff
#MUTE         = amixer -q set Master mute
#CTRL+ALT+ESC = beep

[Switches]
HEADPHONE_INSERT:0 = amixer set 'Int Spk' on
HEADPHONE_INSERT:1 = amixer set 'Int Spk' off
LID:1 = /usr/bin/brightness off
LID:0 = /usr/bin/brightness on
#LID:0 = DISPLAY=:0 XAUTHORITY=/home/user/.Xauthority xset dpms force on
#LID:1 = DISPLAY=:0 XAUTHORITY=/home/user/.Xauthority xset dpms force off
</file>

/usr/bin/brightness:

<file>
#!/bin/bash

[ x"$1" == x ] && exit 1
bfile=/sys/devices/platform/pwm-backlight/backlight/pwm-backlight/brightness
curbr=$(cat $bfile)
brsave=/etc/brightness
minbr=5

case $1 in
  on)
    br=$(cat $brsave)
    if (($br >= $minbr))
    then
      echo -n $br > $bfile
    else
      echo -n $minbr > $bfile
    fi
    exit 0
  ;;
  off)
    echo $curbr > $brsave
    echo 0 > $bfile
    exit 0
  ;;
esac
let "newbr=curbr $1"
if (( 5 < $newbr && $newbr < 255 ))
then
  echo -n $newbr > $bfile
fi
</file>

Done! Now you can put in you earphones and speakers will be switched off.
And you screen backlight should switch off when lid closed and restore when its open.