I don't understand this thing, I have a big problem with pulseaudio , I tried it some times, but it doesn't run fine, I listen some noise with it, now I can't mute the speakers when I put in the headphones, and seems that this bug doesn't have any solution.
Maybe if you posted some information this would mean something ...... as it is I have no idea of your hardware, what software you have installed, or what you have done to get the functionality you want.