Comment 162 for bug 946232

no input sources appear in the sound settings in ubuntu 13.10 even though i can select inputs in pavucontrol (front microphone, back microphone, line in). sound recording works (at least on the alsa level).

this is the regression, as sound inputs sources show up correctly in the old ubuntu 10.10 installed in another partition.

arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC888 Analog [ALC888 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 2: ALC888 Alt Analog [ALC888 Alt Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

where can i find information about the relation between alsa and the things that appear in sound preferences? who decides that the microphone is present in pavucontrol but is missing from sound settings applet?