Please describe the problem:
See attached screenshots, alsamixer shows a "Mix" and "Mix Mono" inputs that i
can't select in the gnome-volume-control list.

I alsa attach a sample c program that output every known alsa channels, it also
lacks the "Mix*" inputs.

Steps to reproduce:
1. alsamixer
2. gnome-volume-control
3. Compare channel lists

For the C prog:
1. gcc alsasrc-set-capture.c -o alsasrc-set-capture $(pkg-config --libs --cflags
gstreamer-plugins-0.8) -lgstinterfaces-0.8

2.  ./alsasrc-set-capture



Actual results:
The C Prog output:
Device:hw:0
Name:Intel 82801DB-ICH4 (Alsa Mixer)
Found 1 mixers
Mixer:Unknown Volume Control 0
Track Master
        Record?0
Track Master Mono
        Record?0
Track Headphone
        Record?0
Track 3D Control - Switch
        Record?0
Track PCM
        Record?0
Track PCM Out Path & Mute
        Record?0
Track Line-in
        Record?0
Track CD
        Record?0
Track Microphone
        Record?0
Track Mic Boost (+20dB)
        Record?0
Track Mic Select
        Record?0
Track Phone
        Record?0
Track IEC958
        Record?0
Track IEC958 Playback AC97-SPSA
        Record?0
Track PC Speaker
        Record?0
Track Aux
        Record?0
Track Capture
        Record?8
Track External Amplifier
        Record?0


Expected results:
The Mix and Mix Mono should appear

Does this happen every time?
Yes

Other information: