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13.10 - Change default sound device - Ask Ubuntu
https://askubuntu.com/questions/398030/change-default-sound-device#:~:text=To%20find%20which%20ALSA%20device%20you%20need%3A%20Using,device%20you%20need%2C%20set%20it%20as%20the%20default%3A
sound - Setting the default ALSA device for ... - Ask Ubuntu
https://askubuntu.com/questions/294512/setting-the-default-alsa-device-for-pulseaudio
You can select the default device in PulseAudio with a GUI like the GNOME volume control, pavucontrol, or from the command line using pacmd set-default-sink. By default, PulseAudio opens devices for 44.1 kHz or 48 kHz, whichever leads to lower resampling effort (so 96 kHz audio would usually lead to the device being opened at 48 kHz.
How do I select a default sound card with alsa? - Ask …
https://askubuntu.com/questions/150851/how-do-i-select-a-default-sound-card-with-alsa
Set defaults: $ pactl set-default-source alsa_input.pci-0000_00_1b.0.analog-stereo $ pactl set-default-sink alsa_output.pci-0000_00_1b.0.analog-stereo It is possible even to set ports too. See How to switch sound output with key shortcut. Reference: man pactl
Set up default audio device on Ubuntu 20.04 LTS · GitHub
https://gist.github.com/ChriRas/b9aef9771a97249cb4620e0d6ef538c4
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. 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
Setting Default Audio Device in Ubuntu 18.04 | rastating ...
https://rastating.github.io/setting-default-audio-device-in-ubuntu-18-04/
With the name known, pactlcan be executed using the set-default-sinkoption, to switch the output device. In the above example, the command that would be executed is: pactl set-default-sink 'alsa_output.pci-0000_00_1f.3.analog-stereo' Switching the input device consists of the same process, but replacing any instance of sinkwith source.
How to Keep the Default Audio Devices from Changing on …
https://wolfgang-ziegler.com/blog/prevent-changing-of-default-ubuntu-sound-device
$ pactl set-default-source alsa_output.pci-0000_00_1f.3.analog-stereo $ pactl set-default-sink alsa_output.pci-0000_00_1f.3.analog-stereo When trying out this commands with different sources and sinks, the result should be immediately reflected in the Audio Settings dialog. Making the Solution Permanent
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