I was trying to connect my computer to my tv with hdmi and no sound would go through. When I click on the sound settings in the volume control nothing happens and I can't find it in the system setting either. Can anyone help me?
Referencing my own answer on a similar question
PulseAudio Volume Control
Once you've opened PulseAudio Volume Control, choose the
configuration (the last tab), then select the output and/or input you want to use from the
profile dropdown menu. It should look similar to this.
If this doesn't solve the problem, verify that you get sound from other outputs, try a different HDMI cable Verify that whatever device you are trying to play sound through is working, volume is turned up, audio output is connected etc.).
PulseAudio Volume Controlcan also be used to adjust volume levels for each input, output, system sounds and applications that are currently in use.
Here's a post from Linuxhint with more info on PulseAudio.