A simple script thats change the HDMI audio output via udev when detects it's plugged

99-hdmi.audio.sh

#!/bin/bash

readonly HDMI_STATUS="/sys/class/drm/card0/*HDMI*/status"
readonly HDMI_DISCONNECTED=$( grep -oq "disconnected" $HDMI_STATUS ) 

change_sink()
{
    local stream="$1"

    local stream_id="$( echo "$stream" | cut -f1  )"
    local stream_name="$( echo "$stream" | cut -f2  )"    
}


if $HDMI_DISCONNECTED ; then
    zenity --notification --text "HDMI port removed"
    change_sink "$( pactl list short sinks | grep "analog" )"
else
    zenity --notification --text "HDMI port detected"
    change_sink "$( pactl list short sinks | grep "hdmi" )"
fi

99-hdmi.sound.rules

SUBSYSTEM=="drm", ACTION=="change", RUN+="99-hdmi.audio.sh"

README.md

TODO