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[Joe Ress <joeressington@xxxxxxxxx>]

I have replicated this bug on multiple machines with different audio
chipsets and even tried an external USB sound card. I've replicated it
on different flavours of Ubuntu and even on Linux Mint.

The only common factor in all of my tests is the 3.13.0-66 kernel.

32bit X86 is not affected.

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https://bugs.launchpad.net/bugs/1508787

Title:
  Mumble fails to stay connected using 3.13.0-66-generic kernel

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Mumble can't stay connected to the server when using the
  3.13.0-66-generic kernel. It's almost constantly using >100% CPU too.

  It's fine when using the 3.13.0-65-generic kernel.

  To reproduce, boot with the 3.13.0-66-generic kernel and start Mumble.
  It initially connects to the server but then disconnects. All other
  participants in the Mumble are displayed as connected but their 'lips'
  icons always stay greyed out and they can't be heard (although they
  can hear me).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-66-generic 3.13.0-66.108
  ProcVersionSignature: Ubuntu 3.13.0-66.108-generic 3.13.11-ckt27
  Uname: Linux 3.13.0-66-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.15
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  laura      2234 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu Oct 22 06:38:50 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-07-13 (465 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Dell Inc. Dell System XPS L322X
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-66-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-66-generic N/A
   linux-backports-modules-3.13.0-66-generic  N/A
   linux-firmware                             1.127.15
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/15/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A09
  dmi.board.name: 0PJHXN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA09:bd05/15/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Dell System XPS L322X
  dmi.sys.vendor: Dell Inc.

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