Sound going to dummy output on 18.04

Solution 1:

Sorry for replying late, I hope you've found your solution online. In case you haven't here are things that you can try.

Install pavucontrol with

~$ sudo apt-get install pavucontrol
~$ pavucontrol

Then, go under Output Devices and chose the appropriate option. In case that doesn't work, try uninstalling and reinstalling alsa-base, pulseaudio and pavucontrol

~$ sudo apt-get remove --purge alsa-base pulseaudio pavucontrol
~$ sudo apt-get install alsa-base pulseaudio pavucontrol
~$ sudo alsa force-reload
~$ pulseaudio --start

Open pavucontrol again. You might need to reboot after reinstalling given packages.