i'm using the newest Elementary OS version and my internal microphone is not working properly.
I tried to search an answer over the internet and found something interesting.
Someone mentioned that disable the right channel of the internal microphone in
pavucontrol will solve the problem.
BANG!, it worked! But now when i try to record my voice online, as example, the right channel come back to default, and left lose my changes.
So, how to lock my changes, and why this happens?