I use Ubuntu 18.04, and the problem is with the microphone level while speaking through Facebook messenger or any other browser supported messenger. The mic keeps self-adjusting and the other party gets poor sound or none at all. I installed PulseAudio, it works well for Skype, but it’s agonising to see the sliders jump back into the position I didn’t mean for them to be in. A similar problem was discussed here:
The people found a solution for an earlier version of Chrome; my Chrome seems to lack the interface or I’m doing something wrong.
And another similar discussion here:
Are we really helpless in front of Google Leviathan? >:(