Comment 9 for bug 1504175

Using Xubuntu 16.04.

pavucontrol - 3.0-3build1
pulseaudio - 1:7.1-1ubuntu1
pulseaudio-module-x11 - 1:7.1-1ubuntu1
pulseaudio-utils - 1:7.1-1ubuntu1

Start up pavucontrol and the sound mutes momentarily - perhaps 1s or so

reported it externally - affects me with C-Media CMI8788 [Oxygen HD Audio] driver: snd_virtuoso

seen by someone else with Intel 5 Series/3400 Series High Definition Audio driver: snd_hda_intel

https://bugs.launchpad.net/ubuntu/+source/pavucontrol/+bug/1504175