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[Raymond <1302090@xxxxxxxxxxxxxxxxxx>]

autoconfig: line_outs=2 (0x18/0x1a/0x0/0x0/0x0) type:line
 speaker_outs=1 (0x14/0x0/0x0/0x0/0x0)
 hp_outs=2 (0x15/0x16/0x0/0x0/0x0)
 mono: mono_out=0x0
 inputs:
 Mic=0x19
 Internal Mic=0x12

 this won't create correct name for the volume control for the subwoofer
, driver assign front playback volume to node 0x18, surround playback
volume to 0x1a (fake line out)

only one DAC for the remaining headphones and speaker

did both left and right channel affect the subwoofer ?

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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:
  Confirmed

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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