How to fix microphone in Ubuntu?

Question

linux

There is Ubuntu 18.04. There is a microphone, both separate and built into the USB webcam.
To use the microphone, after turning on the computer, remove the plug and return it back, otherwise there is no sound.
Stick into the socket on the back of the sys.block or on the front - there is no difference.
I can’t even google it)) Who came across?

Answer 1

If you restart the ALSA service (or whatever is there now in Bubunt) - will the microphone work?