Problem with ALSA audio output
(Redirected from Problem with audio jacks)
If you have problem with sound, disable "Headphone Jack Sense" and "Line Jack Sense" from mixer.
Also, try running an "advanced" mixer such as gnome-alsamixer, or alsamixergui. These display all the "switches", and you may find that 5.1 channel audio is misconfigured. For example, the Mic-in jack may be configured as Rear_out.