Comment 28 for bug 871611

sorry ... after reboot everything works quite fine although not bug-free ... forget the points B,C,X... and Y1

Z) current state after reboot is:

- additional "Soundcard elements" appeared: "Headphon", "Auto Mute", "Mic Boos"

- volume states before/after headphone insertion are "remembered", but not applied e.g. to the "Speaker" or "Headphon" sliders, but the "Master" volume (e.g. Master:100%, Speaker:80% on 1. may be Master:80%,Speaker:100% on 3.)

- muting "Speaker" or "Headphon" also mutes "Master" and this is not easily undone (using Gnome Alsa Mixer) so you can hear something again (exact behaviour somewhat unclear)
  => solution is to unmute and increase the "System Settings->Sound->Output Volume"