Ubuntu 16.04 Sound Won't Unmute
Solution 1:
I am not sure whether this solution work or not, after hours of debugging I have deleted the pulse audio config settings and boom!!!, it worked.
Take backup before doing it and do it at your own risk
-
take a backup first
cp -r ~/.config/pulse ~/.config/pulse_bak
-
remove the pulse config
rm -rf ~/.config/pulse
Good luck