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[Raymond <1402052@xxxxxxxxxxxxxxxxxx>]

post output of

aplay -D hw:1,0 --dump-hw-params any.wav

pulseaudio drop support of multichannel volume control


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



Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch pswitch-joined penum
  Playback channels: Front Left - Front Right - Rear Left - Rear Right - Front Center - Woofer - Side Left - Side Right
  Limits: Playback 0 - 197
  Mono:
  Front Left: Playback 90 [46%] [-20.06dB] [on]
  Front Right: Playback 90 [46%] [-20.06dB] [on]
  Rear Left: Playback 90 [46%] [-20.06dB] [on]
  Rear Right: Playback 90 [46%] [-20.06dB] [on]
  Front Center: Playback 90 [46%] [-20.06dB] [on]
  Woofer: Playback 90 [46%] [-20.06dB] [on]
  Side Left: Playback 90 [46%] [-20.06dB] [on]
  Side Right: Playback 90 [46%] [-20.06dB] [on]

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Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1402052

Title:
  [USB-Audio - PnP Audio Device, playback] Background noise or low
  volume

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  I hear noise only. Tried changing audio configuration. Worked ok
  before.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu1.1
  ProcVersionSignature: Ubuntu 3.2.0-74.109-generic-pae 3.2.64
  Uname: Linux 3.2.0-74-generic-pae i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 1: Device [PnP Audio Device], device 0: USB Audio [USB Audio]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 2.0.1-0ubuntu17.8
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 1: Device [PnP Audio Device], device 0: USB Audio [USB Audio]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  bringout   2189 F.... pulseaudio
  Card1.Amixer.info:
   Card hw:1 'Device'/'PnP Audio Device at usb-0000:00:02.0-7, full speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB0d8c:0201'
     Controls      : 17
     Simple ctrls  : 6
  Date: Fri Dec 12 21:38:49 2014
  MarkForUpload: True
  PackageArchitecture: all
  PciMultimedia:

  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=bs_BA.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Device failed
  Symptom_Card: CM6501 - PnP Audio Device
  Symptom_Type: High background noise, or volume is too low
  Title: [USB-Audio - PnP Audio Device, playback] Background noise or low volume
  UpgradeStatus: Upgraded to precise on 2013-09-24 (443 days ago)
  dmi.bios.date: 04/22/2010
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: ASUS M2N SLI ACPI BIOS Revision 1103
  dmi.board.name: M2N-SLI
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: 1.XX
  dmi.chassis.asset.tag: 123456789000
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSM2NSLIACPIBIOSRevision1103:bd04/22/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2N-SLI:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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