Em-dash in the very first paragraph

Slop bot

I ran into a problem like this once, and after banging my head against the wall for days it turned out the solution was just running

sudo apt autoremove

That took care of removing a bunch of old stuff in the boot partition that I will not pretend to understand.

Okay the extension I have is called “Sound Input & Output Device Chooser.” I think that if you install this and the Other extension above your problem will be solved.

I use Pop and have a Gnome extension that helps with this. I’m not at home now and I can’t remember the name but I can report back later.

Doing a quick search on this gave me “Application Volume Mixer” but I don’t think this is the exact extension I have.