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12.04
sound
hdmi
events
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URL:
https://askubuntu.com/q/908534
Title:
Set HDMI sound output automatically on connect/disconnect
ID:
/2017/04/24/Set-HDMI-sound-output-automatically-on-connect_disconnect
Created:
April 24, 2017
Edited: June 12, 2020
Upload:
April 8, 2024
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Ubuntu 16.04 - 20.04 Answer
This works for Ubuntu 16.04 - 20.04 which introduced a bug with Pulse Audio 8. Create the file hotplugtv (or hotplug-hdmi if you prefer) and copy in the following lines:
#!/bin/bash
# NAME: hotplugtv
# PATH: /home/$USER/bin
# DESC: Update pulseaudio output device when HDMI TV plugged / unplugged
# CALL: called from /etc/udev/rules.d/99-hotplugtv.rules
# and /home/$USER/bin/lock-screen-timer
# DATE: Created Nov 26, 2016.
# NOTE: logs output using log-file
# UPDT: Dec 14, 2016 - Sometimes /sys/class/drm/card0 & sometimes /sys/class/drm/card1
# so use /sys/class/dmcard* instead.
# Dec 21, 2016 - Relocated to /home/$USER/bin for calling by lock-screen-timer
# Aug 06, 2017 - Convert from home grown log-file to universal logger command.
if [[ $(cat /sys/class/drm/card*-HDMI-A-1/status | grep -Ec "^connected") -eq 1 ]]; then
logger -t /home/rick/bin/log-hotplugtv "HDMI TV connected"
/bin/sleep 2;
export PULSE_RUNTIME_PATH="/run/user/1000/pulse/";
sudo -u rick -E pacmd set-card-profile 0 output:hdmi-stereo;
else
logger -t /home/rick/bin/log-hotplugtv "HDMI TV disconnected"
export PULSE_RUNTIME_PATH="/run/user/1000/pulse/";
sudo -u rick -E pacmd set-card-profile 0 output:analog-stereo;
fi
exit 0
IMPORTANT: Change the user name “rick” to your user name.
In order to call this script from udev during hot-plug events create the file /etc/udev/rules.d/99-hotplugtv.rules containing:
ACTION=="change", SUBSYSTEM=="drm", ENV{HOTPLUG}=="1", RUN+="/home/rick/bin/hotplugtv"
Change /home/rick/bin/ to the path where you placed hotplugtv script.