Comment 8 for bug 771150

Command 'amixer -c0 contents' shows on/off-states correctly for mic and headphone but 'pacmd list-cards' says unknown in case of analog-output-headphones.
However the microphone shows correct states for 'analog-input-microphone' and therefore the volume application switches automatically between external and internal microphone volume.
But I have to open the volume application every time I connect my headset and change to correct output device manually to get some sound therefore please backport to precise.
Lenovo T500, Ubuntu 12.04