On this machine, DAC on node 0x03 seems to give mono output.

Also, it needs additional patches for headset mic support.
It supports CTIA style headsets only.

Alsa-info available at the bug link below.

Cc: stable@kernel.org (v3.10+)
BugLink: https://bugs.launchpad.net/bugs/1236228Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>