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[Raymond <1366419@xxxxxxxxxxxxxxxxxx>]

seem no capture controls

pulseaudio don't support 4 channels volume control

http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa
/alsa-mixer.c?id=527078523815587bfd021bc1d10782403e9b3e84

Card hw:1 'USB'/'E-MU Systems, Inc. E-MU 0404 | USB at usb-0000:00:1d.7-2, high speed'
  Mixer name	: 'USB Mixer'
  Components	: 'USB041e:3f04'
  Controls      : 9
  Simple ctrls  : 5
Simple mixer control 'PCM',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right - Rear Left - Rear Right
  Limits: Playback 0 - 200
  Mono:
  Front Left: Playback 160 [80%] [-20.00dB] [on]
  Front Right: Playback 160 [80%] [-20.00dB] [on]
  Rear Left: Playback 160 [80%] [-20.00dB] [on]
  Rear Right: Playback 160 [80%] [-20.00dB] [on]


Default sink name: alsa_output.usb-E-MU_Systems__Inc._E-MU_0404___USB_E-MU-E5-3F04-07D90512-08FE3-STATION_01-00-USB.analog-stereo
Default source name: alsa_output.usb-E-MU_Systems__Inc._E-MU_0404___USB_E-MU-E5-3F04-07D90512-08FE3-STATION_01-00-USB.analog-stereo.monitor

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Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1366419

Title:
  [USB-Audio - E-MU 0404 | USB, playback] No Playback even with internal
  soundcard to "off"

Status in “alsa-driver” package in Ubuntu:
  New

Bug description:
  There seems to be no easy way to tell the application which soundcard
  to choose. Sometimes it works, sometimes it works half, but mostly it
  doesn't work.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  Date: Sat Sep  6 16:38:49 2014
  InstallationDate: Installed on 2014-07-14 (54 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:USB failed
  Symptom_Card: E-Mu 0404 - E-MU 0404 | USB
  Symptom_Type: None of the above
  Title: [USB-Audio - E-MU 0404 | USB, playback] Playback problem
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/20/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68PZI Ver. F.0F
  dmi.board.name: 3072
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 24.0D
  dmi.chassis.asset.tag: CNU9501Y74
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68PZIVer.F.0F:bd10/20/2009:svnHewlett-Packard:pnHPProBook4510s:pvrF.0F:rvnHewlett-Packard:rn3072:rvrKBCVersion24.0D:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP ProBook 4510s
  dmi.product.version: F.0F
  dmi.sys.vendor: Hewlett-Packard

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