I have the problem that switchboard-plug-sound does not show all my pulseaudio inputs. I do have a rather troublesome sound config (HP Spectre x360 13" 2018), but I got it working to the point where the microphone works and is recognized by pulseaudio (and all apps using it, like chrome). However it does not show up in the system sound settings at all as a microphone.
pavucontrol shows and i can configure it, however I'd like the nice integration.
Is there anything I need to configure/enable to make it show up there ?
I got pulseaudio to recognize it by adding a manual alsa entry to its config file in
~/.config/pulse/default.pa, because it somehow did not pick it up automatically. Where does the switchboard plugin get its device list from ?