As you know you don’t need any Drivers for Audio in Ubuntu OS,but the fact that many doesn’t know is you can install own sound-card and change the Master volumes for MIC,Headphone,Line etc via terminal.The Good thing is you don’t need to install a software for this,it is a default software which comes with Ubuntu .

Type this in your Terminal

$ alsamixer

This software loads inside the terminal so you can control everything via keyboard.(see the screenshots)

Alsamixer screenshot

To select a Sound card press F6


Workaround and explore you will find awesomeness of Linux.

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