Comment 1 for bug 380928

I have the same issue. When I attach my USB headset (Microsoft LifeChat LX-3000) the audio settings do not automatically switch to use it, nor am I prompted. Currently I have to go into Sound Preferences, and select both the Input and Output tabs to switch audio for each manually. Once I have done so the buttons on the headset do successfully start to operate the volume on the system, and audio is routed through the headset correctly.

I suppose I could figure out some udev rule to do this but that would be tedious and not something the average human user would think of.

With all the advances in audio support in Ubuntu lately this is a really surprising niggle that still exists.