what ever i do and whatever comand i found on the net and in linux blogs but no soud, My mint 19.3 Cinnmon tricia has no sound at all before and after new install all the same. NO SOUND.And its seams to become a old and common problem without a resonable solution unless U are a programmer or/and a specialist in The Linux language.
Had same problem it came out that after uninstalling pavucontrol pop sounds when activating sound disapered. Im using now alsamixer command to set up volumes and.. the loudspeaker icon still on my belt so I can still adjust speaker and mic volume. My linux mint is 20.1 2b1af7f3a8