output of alsa-info.sh http://pastebin.com/Kmd2J2Bq >you may need to find out whether rear jack support mono or not It is old so it is hard to find detailed specification. I found only this: Sound Balser Live model CT4830 http://support.creative.com/kb/ShowArticle.aspx?sid=5805 >Just swap the definition of front and rear device and change the channel map I don't know how to do it. Can you tell me? What do I need to do with the link you provided? Can you give some more specific steps or refer to some material and I will do it with the help of my distribution forum members -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20141121/24009053/attachment.html>