alsa-project/alsa-ucm-conf issue #648 was opened from scaledteam:

Hello! I just discovered that Alsa UCM might be cause of my issues, but i don't know how to confirm and diagnose that. So i'm asking for help.

When i was using Arch Linux, it allowed me to select mono microphone input. It's important feature, because many communication programs just average microphone and instrument input, resulting in loosing half of the volume, which cannot be compensated with 200% gain in pavucontrol.

Now i switched to Linux Mint and i lost that feature. But ucm files in /usr/share/alsa seems identical to archlinux. Just to be sure i tried Manjaro liveusb and i found all of this options, no config required.

There is alsa info just in case: [alsa-info.txt](https://github.com/user-attachments/files/23697024/alsa-info.txt)

Can someone help me with this?

Linux mint: <img width="700" height="421" alt="Image" src="https://github.com/user-attachments/assets/c555d380-bb2b-4fcf-b835-d0c92ce59897" />

Manjaro: 


Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/648 Repository URL: https://github.com/alsa-project/alsa-ucm-conf