I'm trying to get my laptop to switch the audio to HDMI when it's plugged in, and back to standard analog when it's removed.
I set up a udev rule to trigger a script to perform the switching, however I'm having problems getting it to work:
- It appears that until I select the HDMI Audio output in the Sound Settings, it is not recognised as a available sink, also once the HDMI Audio output is selected, the analog output is no longer listed.
See the below:
# HDMI plugged in, not selected in Sound settings.
$ pactl list short sinks
5 alsa_output.pci-0000_00_1b.0.analog-stereo module-alsa-card.c s16le 2ch 44100Hz SUSPENDED
kingamajick@kingamajick-laptop: ~
# HDMI selected in sound settings
$ pactl list short sinks
7 alsa_output.pci-0000_00_1b.0.hdmi-stereo module-alsa-card.c s16le 2ch 48000Hz SUSPENDED
kingamajick@kingamajick-laptop: ~
# HDMI removed
$ pactl list short sinks
9 alsa_output.pci-0000_00_1b.0.analog-stereo module-alsa-card.c s16le 2ch 48000Hz SUSPENDED
The script I'm using the toggle the output is as follows:
#!/bin/bash
HDMI_STATUS=`cat /sys/class/drm/card0/*HDMI*/status`
INPUTS=($(pacmd list-sink-inputs | grep index | awk '{print $2}'))
if [ $HDMI_STATUS = "connected" ]
then
pactl set-default-sink alsa_output.pci-0000_00_1b.0.hdmi-stereo
for i in ${INPUTS[*]}; do pacmd move-sink-input $i alsa_output.pci-0000_00_1b.0.hdmi-stereo &> /dev/null; done
else
pactl set-default-sink alsa_output.pci-0000_00_1b.0.analog-stereo
for i in ${INPUTS[*]}; do pacmd move-sink-input $i alsa_output.pci-0000_00_1b.0.analog-stereo &> /dev/null; done-server $PULSE_SERVER set-card-profile 0 output:analog-stereo+input:analog-stereo
fi
The script gives an error about no such sink when I trigger it before I select HDMI in the sound settings.