HP EliteBook 8730w

autoconfig: line_outs=1 (0x12/0x0/0x0/0x0/0x0) type:line
   speaker_outs=1 (0x16/0x0/0x0/0x0/0x0)
   hp_outs=1 (0x11/0x0/0x0/0x0/0x0)
   mono: mono_out=0x0
   inputs:
     Mic=0x14
     Internal Mic=0x15
     Line=0x1c


==> Best config: lo_type=0, wired=1, mio=1
multi_outs = 12/0/0/0 : 3/0/0/0 (type LO)
  out path: depth=5 :03:20:21:0a:12
hp_outs = 11/0/0/0 : 4/0/0/0
  hp  path: depth=4 :04:22:07:11
spk_outs = 16/0/0/0 : 3/0/0/0
  spk path: depth=4 :03:0f:0b:16
  mix path: depth=5 :03:20:21:07:11
  mix path: depth=5 :03:20:21:0b:16

the driver seem ignore that speaker can connect to 0x21 too
when loopback mixing is enbled 

enabled internal mic playback volume may cause feedback  if internal mic
and internal speaker are close enough

this may be why the driver do not create master playback volume at node
0x21

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=5ccc618fee67f0f0b2122dd4b32a02fd2b6a1569

-static const struct snd_kcontrol_new ad1984a_touchsmart_mixers[] = {
- HDA_CODEC_VOLUME("Master Playback Volume", 0x21, 0x0, HDA_OUTPUT),


-static const struct snd_kcontrol_new ad1984a_precision_mixers[] = {
- HDA_CODEC_VOLUME("Master Playback Volume", 0x21, 0x0, HDA_OUTPUT),

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/1254884

Title:
  Pulseaudio: incoherent muting of GStreamer channels (mutes master,
  headphone and speaker, but unmutes only master)

Status in PulseAudio sound server:
  Unknown
Status in “pulseaudio” package in Ubuntu:
  Incomplete
Status in “xfce4-volumed” package in Ubuntu:
  Invalid

Bug description:
  with certain audio hardware (those where alsamixer shows separate
  "headphone" and "speaker" channels) pressing of the mute button on
  laptop keyboards causes mute of all three channels: master, headphone
  and speaker. unfortunately, pressing the button again to unmute (or
  deselecting mute in the xfce audio mixer panel applet) unmutes only
  the master channel, leaving headphone and speaker muted. there is no
  other way than opening alsamixer in a terminal (or open mixer controls
  from the applet) and manually clicking the two remaining channels to
  unmute.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: xfce4-volumed 0.2.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6
  Uname: Linux 3.11.0-13-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  Date: Mon Nov 25 22:33:06 2013
  InstallationDate: Installed on 2013-11-07 (17 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 
(20131016.1)
  MarkForUpload: True
  SourcePackage: xfce4-volumed
  UpgradeStatus: No upgrade log present (probably fresh install)

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