.092201] input: HDA Intel PCH Headphone Surround as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input19
[152768.092392] input: HDA Intel PCH Headphone Front as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input18
[152768.092619] input: HDA Intel PCH Mic as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input17
[152890.220402] hda-codec: reconfiguring
[152891.270534] hda-codec: out of range cmd 0:20:400:ffff7fff


seem you are using dynamic reconfiguration instead of early patching 

did you use "apply now" only instead of "install boot override" to
create the firmware file to fix up the pin ?

speaker and subwoofer have their own volume controls and two headphone
share the volume control

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https://bugs.launchpad.net/bugs/1302090

Title:
  Dell Alienware 14, Speaker sound output is mono until a headphone jack
  is plugged

Status in “alsa-driver” package in Ubuntu:
  New

Bug description:
  Here's the required release and package information:

      Description:    Ubuntu Trusty Tahr (development branch)
      Release:        14.04

      Package: linux-image-extra-3.13.0-19-generic
      Version: 3.13.0-19.40

  When playing audio through speakers on my Alienware 14 2014, the sound
  output is in mono until I plug a headphone in any of the two available
  headphone jacks (obviously, the auto-mute option must be disabled).
  When I do so, the sound starts to play in stereo.

  I would love the sound output to be stereo by default and not be
  forced to plug anything to achieve that.

  Attached is the alsa-info.sh output for my machine.

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