touch-packages team mailing list archive

[Raymond <1302090@xxxxxxxxxxxxxxxxxx>]

speaker and subwoofer should assign DAC(Volume) first instead of two
headphone by increasing badness for (type HP) when there is no line out

if (!spec->no_multi_io &&
	    cfg->hp_outs && cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
		if (count_multiio_pins(codec, cfg->hp_pins[0]) >= 2)
			spec->multi_ios = 1; /* give badness */


+if ((cfg->speaker_outs == 2) && (cfg->hp_outs == 2) && (cfg->line_outs == 0))
+          if (cfg->line_out_type == AUTO_PIN_HP_OUT)
+                   badness++

	/* re-count num_dacs and squash invalid entries */
	spec->multiout.num_dacs = 0;

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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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