Sound over Dockingstation in KDE

Matthias Redies matthias.redies at
Sat Dec 5 22:53:36 GMT 2015

I just installed Debian on my new Laptop(Lenovo X1) and I would like to 
use a ThinkPad OneLink Dock. Everything works great (USB, HDMI, 
Ethernet...) except for the audio.

When I plug in the OneLink and connect my audio system to the dock the 
sound is still played over the Laptop internal sound. If I right-click 
on the speaker symbol in the menu bar, I can select a "main channel"(the 
German original is: "Hauptkanal auswählen") , which lists an entry:

|ThinkPad OneLink Dock USB Audio Analog Stereo |

But if I selected nothing changes, the sound is still played over the 
internal sound system.

How do I play sounds over my docking station in KDE?

This is the software I'm using:

Pulseaudio: 5.0-13

Qt: 4.8.6

KDE: 4.14.2

kde4-config: 1.0

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