On Wed, 2016-09-21 at 20:05 +0200, Istvan Gabor wrote: > I have another question: > > I am puzzled by stream/sink names in pavucontrol window. > > For example in the playback tab I have: > > Virtual Sink Stream from Virtual Sink pizza on Built-in Audio Analog Stereo on _Built-in_Audio_Analog_Stereo_ > > AND > > ALSA plug-in [plugin container]: ALSA Playback on _Virtual_Sink_pizza_on_Built-in_Audio_Analog_Stereo_ > > The underlined parts are in a button on the right. > > What do these definitions/descriptions exactly mean? module-virtual-sink connects to the master sink by creating a stream. This stream has description "Virtual Sink Stream from Virtual Sink pizza on Built-in Analog Stereo". The stream description is generated using this pattern: "Virtual Sink Stream from <virtual sink description>". The virtual sink description in turn has pattern "Virtual Sink <sink name> on <master sink description>". You configured the virtual sink name to be "pizza", and the master sink description is "Built-in Audio Analog Stereo". The awfully long stream description is a combination of all these. The second stream description is for an alsa application stream. Those streams use "ALSA plug-in [<program name>]: ALSA Playback" as the description (the description is set by the alsa plugin that connects alsa applications to pulseaudio). I assume you're playing Flash content in a browser. "plugin container" is a string that the browser has set as the Flash plugin process name. --Â Tanu