Ubuntu froze and I was forced to shut it down with brute force (holding the power button). Ever since then the sound settings have disappeared and I am not able to adjust the volume / select the output and etc. There is sound, the only thing missing is the settings for it.
Here is a pic:
(Linux Ubuntu 14.04 with GNOME desktop environment)
Answer
Try running the following command and then, reboot:
rm -r ~/.config/pulse; pulseaudio -k
Attribution
Source : Link , Question Author : Stenli S , Answer Author : mchid
