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[Sb <1497675@xxxxxxxxxxxxxxxxxx>]

Thanks Christopher for the reply. When I boot with the 3.19 kernel from
Vivid, this issue is *not* reproducible.

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https://bugs.launchpad.net/bugs/1497675

Title:
  [15.10 Regression] LightDM unity-greeter login sound has noisy
  distortion after 15.10 Wily upgrade

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Hi, I just upgraded from Ubuntu 15.04 to 15.10 beta. Now when the LightDM unity-greeter screen appears, it produces a loud distortion noise where the Ubuntu drums should sound. It was working fine in 15.04 and all prior versions. Apart from this sound works fine after logging into Ubuntu.
  --- 
  ApportVersion: 2.18.1-0ubuntu1
  Architecture: i386
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 15.10
  InstallationDate: Installed on 2015-07-26 (56 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
  Package: unity-greeter 15.10.1-0ubuntu1
  PackageArchitecture: i386
  ProcVersionSignature: Ubuntu 4.2.0-10.12-generic 4.2.0
  Tags:  wily
  Uname: Linux 4.2.0-10-generic i686
  UpgradeStatus: Upgraded to wily on 2015-09-20 (1 days ago)
  UserGroups: adm lpadmin sambashare sudo
  _MarkForUpload: True
  --- 
  ApportVersion: 2.18.1-0ubuntu1
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  miriam     1808 F.... pulseaudio
   /dev/snd/controlC1:  miriam     1808 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 15.10
  HibernationDevice: RESUME=UUID=cc55c385-01f9-45f4-b217-66627c7455be
  InstallationDate: Installed on 2015-07-26 (56 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
  MachineType: LENOVO 20AR006RUS
  Package: unity-greeter 15.10.1-0ubuntu1
  PackageArchitecture: i386
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-10-generic root=UUID=6e3af67c-126e-4f64-8004-8e87ef62201c ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.2.0-10.12-generic 4.2.0
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-10-generic N/A
   linux-backports-modules-4.2.0-10-generic  N/A
   linux-firmware                            1.148
  Tags:  wily wily
  UdevLog: Error: [Errno 2] No existe el archivo o el directorio: '/var/log/udev'
  Uname: Linux 4.2.0-10-generic i686
  UpgradeStatus: Upgraded to wily on 2015-09-20 (1 days ago)
  UserGroups: adm lpadmin sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 06/22/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET84WW (2.34 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AR006RUS
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50510 PRO
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGJET84WW(2.34):bd06/22/2015:svnLENOVO:pn20AR006RUS:pvrThinkPadT440s:rvnLENOVO:rn20AR006RUS:rvrSDK0E50510PRO:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AR006RUS
  dmi.product.version: ThinkPad T440s
  dmi.sys.vendor: LENOVO

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