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--- ubuntu:sound:pulseaudio:set_default_sound_output_card [2020/12/13 12:08] – created peter
+++ ubuntu:sound:pulseaudio:set_default_sound_output_card [2020/12/13 12:23] (current) – peter
@@ Line 1: / Line 1: @@
 ====== Ubuntu - Sound - PulseAudio - Set default sound output card ======
+Set default sound output card dynamically using PulseAudio.
+----
+===== Get list of Sources =====
+<code bash>
+pactl list short sources
+</code>
+returns:
+<code bash>
+	alsa_output.pci-0000_0b_00.4.analog-stereo.monitor	module-alsa-card.c	s16le 2ch 48000Hz	IDLE
+	alsa_output.pci-0000_09_00.1.hdmi-stereo-extra1.monitor	module-alsa-card.c	s16le 2ch 44100Hz	SUSPENDED
+</code>
+----
+===== Get list of Sinks =====
+<code bash>
+pactl list short sinks
+</code>
+returns:
+<code bash>
+	alsa_output.pci-0000_0b_00.4.analog-stereo	module-alsa-card.c	s16le 2ch 48000Hz	RUNNING
+	alsa_output.pci-0000_09_00.1.hdmi-stereo-extra1	module-alsa-card.c	s16le 2ch 44100Hz	SUSPENDED
+</code>
+----
+----
+===== Set Defaults =====
+<code bash>
+pactl set-default-source alsa_output.pci-0000_0b_00.4.analog-stereo
+pactl set-default-sink alsa_output.pci-0000_0b_00.4.analog-stereo
+</code>
+----
+===== Use a BASH Script =====
+<code bash>
+!/bin/bash
+declare -i sinks_count=`pacmd list-sinks | grep -c index:[[:space:]][[:digit:]]`
+declare -i active_sink_index=`pacmd list-sinks | sed -n -e 's/\*[[:space:]]index:[[:space:]]\([[:digit:]]\)/\1/p'`
+declare -i major_sink_index=$sinks_count-1
+declare -i next_sink_index=0
+if [ $active_sink_index -ne $major_sink_index ] ; then
+    next_sink_index=active_sink_index+1
+fi
+#change the default sink
+pacmd "set-default-sink ${next_sink_index}"
+#move all inputs to the new sink
+for app in $(pacmd list-sink-inputs | sed -n -e 's/index:[[:space:]]\([[:digit:]]\)/\1/p');
+do
+    pacmd "move-sink-input $app $next_sink_index"
+done
+#display notification
+declare -i ndx=0
+pacmd list-sinks | sed -n -e 's/device.description[[:space:]]=[[:space:]]"\(.*\)"/\1/p' | while read line;
+do
+    if [ $next_sink_index -eq $ndx ] ; then
+        notify-send -i notification-audio-volume-high "Sound output switched to" "$line"
+        exit
+</code>
+**NOTE:**
+Before running the script:
+  * Set Permissions: <code bash>sudo chmod 755 /usr/local/bin/audio-device-switch.sh</code>
+To allocate to a shortcut key:
+  * Navigate to **System -> Preferences -> Keyboard Shortcuts**.
+  * Click **Add**.
+    * Name:  **Switch between audio devices**.
+    * Command:  **audio-device-switch.sh**.
+    * Press Apply.
+    * Select the newly added shortcut row and click on the shortcut column.
+    * Choose a shortcut combination – e.g.WIN + F12.
+----
+===== References =====
+man pactl