Comment # 6 on bug 1093578 from Takashi Iwai

(In reply to Patrick Finie from comment #5)
> (In reply to Takashi Iwai from comment #4)
> > OK, thanks, now I understood better.
> > 
> > So it appears more likely an issue with XFCE pluse plugin.  Basically the
> > audio keyboard control is taken by that application and translated to the
> > appropriate action.  Usually this should have been applied to the main
> > PulseAudio volume control.
> > 
> > When you disconnect the USB audio device, it starts working again
> > immediately?
> > And, you can manage the volume control via the volume bar on the task bar
> > for multiple devices, right?
> 
> Going to the Inspiron 3850 as an example,  i unplugged the Triton Kunai to
> take with me on a trip.  The volume controls on the keyboard still do not
> function.  

Aha, so it doesn't recover?

Just to make things straight: is my understanding correct?

- Boot without USB-audio --> volume control works for the onboard audio
- Plug USB-audio --> volume control stops working
- Unplug USB-audio again --> volume control is kept broken

> Unlike KDE, most of the audio things for the panel only control one audio
> source and to deal with multiple audio sources or streams you have to open
> Pulse Audio Control.

Yes, and this is the intended behavior as designed, I'd say.

Which xfce4 plugin packages did you install on your system?
Please show the output of "rpm -qa | grep xfce4- | sort"