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[Raymond <1236965@xxxxxxxxxxxxxxxxxx>]

The reason why Line Out get "PCM Playback Volume" and "PCM Playback
Switch",   line out is put in multi_out but multi_ios is still zero
because of badness 0x8020

	/* for a single channel output, we don't have to name the channel */
	if (cfg->line_outs == 1 && !spec->multi_ios)
		return "PCM";

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https://bugs.launchpad.net/bugs/1236965

Title:
  pulseaudio does not recognize internal speakers [P180HMx, Realtek
  ALC892, Speaker, Internal] volume slider problem

Status in “linux” package in Ubuntu:
  Fix Committed
Status in “pulseaudio” package in Ubuntu:
  In Progress

Bug description:
  steps to reproduce:  
  1.  acquire a device with the problem, such as Clevo P180HM laptop motherboard 
  2.  install ubuntu 12.04  (now updated to 12.04.3 currently) 
  3.  systray > speaker-icon > sound-settings > output tab  
  4.  no entry for "speakers built-in audio" appears 

  workaround:  
  running the shell script mentioned in this comment helps -- 
  https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/946232/comments/158 

  however, the workaround is not completely satisfactory, because 
  adjusting the (singular) volume-slider provided by pulseaudio only 
  causes some of the (multiple) volume-sliders known to alsamixer to react. 
  Specifically, turning the pulseaudio volume upwards only changes the 
  'master' and belatedly the 'pcm' volumes inside alsamixer.  This ignores 
  'speaker clfe' + 'speaker front' + 'speaker surround playback volume' 
  plus maybe others.  Effectively, this means audio playback is weak:  instead 
  of spreading typical 2ch audiofiles across all internal speakers, only some 
  are used, and only at whatever volume alsamixer specifies.  (Turning the 
  ignored volumes up in alsamixer causes a different problem:  then it is no 
  longer possible to lower the sound to a relatively-quiet volume.)  

  Here is some information from one of the ubuntu pulseaudio/alsa devs:  
  https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/946232/comments/159
  David Henningsso​n (946232@xxxxxxxxxxxxxxxxxx) wrote:  
  ...you have unusual hardware: in addition to normal
  headphones and stereo line out, you have 5.1 internal speakers. This
  leads to unusual alsamixer names (e g "Speaker Front") which we do not
  match for in PulseAudio. Fixing that means that we should add those
  names in PulseAudio - but let's discuss that in a new bug instead.

  Let me know if you would like more specifics.  I have run codecgraph,
  alsa-info, etc.

  $ cat /proc/asound/card*/codec#* | grep --before-context=4 --after-context=1 "Subsystem Id" 
  Codec: Realtek ALC892
  Address: 0
  AFG Function Id: 0x1 (unsol 1)
  Vendor Id: 0x10ec0892
  Subsystem Id: 0x15588000
  Revision Id: 0x100302
  --
  Codec: ATI R6xx HDMI
  Address: 0
  AFG Function Id: 0x1 (unsol 0)
  Vendor Id: 0x1002aa01
  Subsystem Id: 0x00aa0100
  Revision Id: 0x100200

  $ lspci -vvnn | grep --after-context=1 "Audio device"
  00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller [8086:1c20] (rev 05)
  	Subsystem: CLEVO/KAPOK Computer Device [1558:8000]
  --
  01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Barts HDMI Audio [Radeon HD 6800 Series] [1002:aa88]
  	Subsystem: CLEVO/KAPOK Computer Device [1558:8000]

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu1.1
  ProcVersionSignature: Ubuntu 3.5.0-41.64~precise1-generic 3.5.7.21
  Uname: Linux 3.5.0-41-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  j          6328 F.... pulseaudio
   /dev/snd/controlC0:  j          6328 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7f00000 irq 52'
     Mixer name	: 'Realtek ALC892'
     Components	: 'HDA:10ec0892,15588000,00100302'
     Controls      : 36
     Simple ctrls  : 16
  Card1.Amixer.info:
   Card hw:1 'Generic'/'HD-Audio Generic at 0xf7e40000 irq 54'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100200'
     Controls      : 6
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Tue Oct  8 12:02:44 2013
  InstallationMedia: This
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_Jack: Speaker, Internal
  Symptom_Type: Volume slider, or mixer problems
  Title: [P180HMx, Realtek ALC892, Speaker, Internal] volume slider problem
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/29/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.4
  dmi.board.asset.tag: Not Applicable
  dmi.board.name: P180HMx
  dmi.board.vendor: CLEVO
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: Not Applicable
  dmi.chassis.type: 10
  dmi.chassis.vendor: CLEVO
  dmi.chassis.version: Not Applicable
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd09/29/2011:svnCLEVO:pnP180HMx:pvrNotApplicable:rvnCLEVO:rnP180HMx:rvrNotApplicable:cvnCLEVO:ct10:cvrNotApplicable:
  dmi.product.name: P180HMx
  dmi.product.version: Not Applicable
  dmi.sys.vendor: CLEVO

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