Comment 22 for bug 1274613

The complete set of steps for the workaround are:

* In a terminal, run `pactl load-module module-bluetooth-discover`
* Right-click on the device in blueman, select "connect to audio sink"
* Open Puleseaudio volume control (pavucontrol), browse to "configuration" , use the dropdown to turn the Built-in audio profile "off"
* use the other dropdown to set the bluetooth device to use A2DP

I think the desirable behavior is you would hit "connect to audio sink" and audio would start flowing through the bluetooth device, and then if you hit disconnect it would start flowing through the default profile again.

However, there's an additional bug here, which is that after disconnecting (and manually switching the sink back on,) the default profile seems altered. I'm a little confused by what the underlying configuration change is, but xfce4-volumed can't control the volume of the built-in audio until I kill it and restart it:

killall xfce4-volumed
xfce4-volumed