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[Raymond <1437512@xxxxxxxxxxxxxxxxxx>]

why do the output of alsa-info (speaker not working) missing many
important info (e.g.alsactl,..amixer, sysfs pin cfg) ?

it is normal the speaker is muted when either one of the headphone jack
is plugged


control.36 {
		iface CARD
		name 'Front Headphone Front Jack'
		value true
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.37 {
		iface CARD
		name 'Front Headphone Surround Jack'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}

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Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1437512

Title:
  [Inspiron 1525, SigmaTel STAC9228, Speaker, Internal] unmute problem

Status in alsa-driver package in Ubuntu:
  Incomplete

Bug description:
  system goes into power save mode on AC,
  resuming from login screen
  keboard unmute does not unmute alsa control SPEAKER
  master, PCM will unmute.

  power save mode adds undesired MUTE of alsa's speaker

  expected power manager to not mute speaker only MASTER PCM

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-48.80-generic 3.13.11-ckt16
  Uname: Linux 3.13.0-48-generic i686
  ApportVersion: 2.14.1-0ubuntu3.8
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  kiera      2273 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Fri Mar 27 19:30:10 2015
  InstallationDate: Installed on 2014-04-21 (340 days ago)
  InstallationMedia: Xubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140205)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel successful
  Symptom_Card: Built-in Audio - HDA Intel
  Symptom_Jack: Speaker, Internal
  Symptom_PulsePlaybackTest: PulseAudio playback test successful
  Symptom_Type: None of the above
  Title: [Inspiron 1525, SigmaTel STAC9228, Speaker, Internal] Playback problem
  UpgradeStatus: Upgraded to trusty on 2015-03-24 (3 days ago)
  dmi.bios.date: 06/27/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A13
  dmi.board.name: 0U990C
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA13:bd06/27/2008:svnDellInc.:pnInspiron1525:pvr:rvnDellInc.:rn0U990C:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Inspiron 1525
  dmi.sys.vendor: Dell Inc.

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