Set up default audio device on Ubuntu 20.04 LTS

readme.md

Problem

I have a notebook connected to a port replicator. I want to use the build-in speakers and microfone and not the external ones. If I boot my notebook in my port replicator Ubuntu changes the devices to external.

Solution

1. Find your internal speaker

pactl list short sinks

0	alsa_output.usb-Generic_USB_Audio_201405280001-00.analog-stereo	module-alsa-card.c	s16le 2ch 44100Hz	SUSPENDED
1	alsa_output.pci-0000_00_1f.3.analog-stereo	module-alsa-card.c	s16le 2ch 44100Hz	SUSPENDED

2. Set your internal speaker as default pactl set-default-sink <DEVICE> e.g. pactl set-default-sink alsa_output.pci-0000_00_1f.3.analog-stereo

3. Add to "Startup Applications" ("Startprogramme" in German)

• Open the application "Startup Applications" (Should be preinstalled on Ubuntu)
• Click on "Add"
• Give your startup item a name
• Copy your command from above into the command field.
• Click on "Save".

4. Find your internal microfone

pactl list short sources

0	alsa_output.usb-Generic_USB_Audio_201405280001-00.analog-stereo.monitormodule-alsa-card.c	s16le 2ch 44100Hz	SUSPENDED
1	alsa_input.usb-Generic_USB_Audio_201405280001-00.iec958-stereo	module-alsa-card.c	s16le 2ch 44100Hz	RUNNING
2	alsa_output.pci-0000_00_1f.3.analog-stereo.monitor	module-alsa-card.c	s16le 2ch 48000Hz	SUSPENDED
3	alsa_input.pci-0000_00_1f.3.analog-stereo	module-alsa-card.c	s16le 2ch 44100Hz	SUSPENDED

5. Set your internal speaker as default pactl set-default-source <DEVICE> e.g. ppactl set-default-source alsa_input.pci-0000_00_1f.3.analog-stereo

6. Repeat step 3.