Consegui corrigi-lo seguindo as etapas em este link . Eu escolhi o raspi-config way, ie.
sudo raspi-config
Então:
Select Option 8
Advanced Optionsand pressEnter, then select Option A6:Audioand pressEnter:
E:
Now you are presented with the two modes explained above as an alternative to the default
Autooption. Select a mode, pressEnterand press the right arrow key to exit the options list, then selectFinishto exit the configuration tool.
Agora reiniciado e funciona.