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[Mary Sherman <1464994@xxxxxxxxxxxxxxxxxx>]

Can you give me more detailed instructions on how to do this (report
upstream, search in the registry)?

I've searched "preamp" and "pre-amp" in the windows registry, but
couldn't find anything.

I'm aware of the clipping cause - I was pointing that, given that the
volume is low, raising it above 100% (which causes clipping) is the only
way to have loud enough audio.

Thanks!

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https://bugs.launchpad.net/bugs/1464994

Title:
  Low audio volume on Thinkpad Helix

Status in pulseaudio package in Ubuntu:
  New

Bug description:
  I have a Thinkpad Helix, which I dual boot with Windows 8.x and
  Ubuntu.

  The audio volume in Ubuntu is low, compared to Windows, even when the
  device output is set on 100%.

  For example, when I watch something, on VLC, I can increase both the
  VLC volume and the device output to more than 100%, say 130% each; in
  this case, I reach a volume comparable to Windows, but in this case is
  clipped.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: pulseaudio 1:6.0-0ubuntu6
  ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8
  Uname: Linux 3.19.0-20-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  saverio    1635 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Sun Jun 14 13:17:10 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-06-14 (0 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
  SourcePackage: pulseaudio
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/17/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GFET50WW (1.29 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 37023L0
  dmi.board.vendor: LENOVO
  dmi.board.version: Win8 Pro MBR TPG
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGFET50WW(1.29):bd09/17/2014:svnLENOVO:pn37023L0:pvrThinkPadHelix:rvnLENOVO:rn37023L0:rvrWin8ProMBRTPG:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 37023L0
  dmi.product.version: ThinkPad Helix
  dmi.sys.vendor: LENOVO

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