setting default input device

[buteman]

Mint 20 cinnamon
I have a Behringer usb sound card connected to my desktop computer but I don't have a mic with phono plugs. I have been using a mic plugged into the rear mic input socket. Each time I boot the PC I have to change from the usb card input to the rear input on the PC. I tried installing pulseaudio and was able to set the input as I wanted it, leaving the output coming from the usb card. On rebooting it had totally ignored the usb card and the only way I could get it back to what I had before was to uninstall pulsaudio and reboot the PC.
Is there some config file I can edit to give what I want without trying to use pulseaudio or is there some way to get pulseaudio to keep it set as I want ?

[Termy]

What you can do is create '~/.config/pulse/default.pa', then add the following within:

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#!/usr/bin/pulseaudio -nF

set-default-source YOUR_SOURCE_NAME
set-default-sink YOUR_SINK_NAME

Obviously replace the temporary values with something appropriate for your system. That should be loaded for your current user. If you want it to be global, you can adjust '/etc/pulse/default.pa'. I've only ever edited the global one, so I'm not 100% sure my instruction will work for a specific user, but I imagine it will.

[buteman]

What you can do is create '~/.config/pulse/default.pa', then add the following within:

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#!/usr/bin/pulseaudio -nF

set-default-source YOUR_SOURCE_NAME
set-default-sink YOUR_SINK_NAME

Thanks but at present I have no idea what the sink_name or source_name could be.
I had a look on my laptop and it has alsa installed. I found a command which might also have solved the problem.

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sudo alsacrl store

to save the settings and

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sudo alsactl restore

When I went to look on the PC I wanted this on to try it alsa wasn't installed so as I set them both up from the same Mint installer I am at a loss. I have a feeling I am going to have to re-install on the PC. How is it handling sound?

Update, I installed the software but it doesn't save my settings so still have change it manually each time.