While trying to fix no sound in Ubuntu 14.04, you may re-install PulseAudio and finally end up with sound indicator missing from Unity panel.
First I thought may be it’s just a display issue as there are settings that allow or block the display of sound indicator applet. To check the sound settings, I opened Unity Tweak Tool but it throw me the following error:
The error message is read as following:
The following schema is missing
In order to work properly, Unity Tweak Tool recommends you install the necessary packages
As it is evident from the error message, sound indicator is indeed missing from the system. So what can be done to fix the issue? Simple, install the sound indicator again. Let’s see how to do it.
Fix no sound indicator issue in Ubuntu 14.04
Open a terminal and use the following command:
sudo apt-get install indicator-sound
You can restart the system and it will be fine. If you don’t want to restart the system and want the sound indicator to appear instantly, use the following command for Unity:
If you are using Gnome, you can use this command instead:
This should bring the sound indicator back in top panel. I hope this fixes the issue for you. Feel free to drop a comment to ask a question or just to say thanks :)