I have Ubuntu 16.04 installed on my laptop. Recently I installed a music recording and mixing software called kxstudio. Since then my system is permanently muted. I can't increase the volume using the keyboard. When I try increasing system volume from Sound Settings it reverts back to zero immediately after I close the window. The mute option under the sound icon in the system tray is permanently ticked.
I uninstalled kxstudio but that hasn't seemed to have helped. Is there a way to revert back to a previous state? Or any alternative solution to get sound back on my system?