Please describe the problem:
The new gnome-volume-control in Jaunty does not list virtual Pulseaudio sinks in the output tab of the "sound preferences" dialog. Additionally, if a virtual sink is selected as default using the pavucontrol application, then the "output volume" slider in that dialog becomes disabled.

In my case, my virtual sink is a LADSPA plugin that works as a system-wide equalizer. It is initialized at the end of my /etc/pulseaudio/default.pa, like so:

.nofail
load-module module-ladspa-sink sink_name=equalized_out master=alsa_output.pci_8086_284b_sound_card_0_alsa_playback_0 plugin=mbeq_1197 label=mbeq control=-2,-2,-1,-1,0,0,0,0,1,1,2,3,4,5,5
.fail

(There are multiple other regressions when using virtual sinks now, but they are harder to describe. I will post them on bugzilla soon, but for now I just want to make it clear that virtual sinks exist, that some people use them, and that they have not been given proper attention in Gnome 2.25)

Steps to reproduce:
1. Create virtual sink (editing default.pa)
2. Set virtual sink as default (either in default.pa or using pavucontrol)
3. Open gnome-volume-control


Actual results:
The "output volume" slider becomes disabled, along with much of the "output" tab.


Expected results:
To be able control the volume normally, and to be able to select virtual sinks from the "output" tab as if the were regular sinks.

Does this happen every time?
Yes.

Other information: