I had a "dummy output" problem and started messing with the terminal. After trying multiple users' solutions I decided to uninstall pulseaudio and use alsamixer instead. That didn't fix my issue, rather it just got rid of the volume system tray that I would like to get back.
sudo apt-get autoremove pulseaudio to uninstall then
sudo apt-get install pulseaudio to re-install but all of my issues are still the same, and the system tray volume icon isn't back after re-booting either.
How do I get my sound devices to output properly and the volume tray back?
Also, the hdmi output disappeared from PulseAudio Volume Control.