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[Luis Henriques <luis.henriques@xxxxxxxxxxxxx>]

This may be (or may be not!) a duplicate of bug #1503655.  The issue has
been identified in several kernel versions, and a fix has been uploaded.
In the meantime, I've a test kernel that can be used to confirm if this
is *really* the same bug.

People running Trusty (3.13 kernel) can try: http://people.canonical.com/~henrix/lp1503655/t/amd64/
People running Vivid (3.19 kernel) can try: http://people.canonical.com/~henrix/lp1503655/v/amd64/

Thanks!

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https://bugs.launchpad.net/bugs/1503647

Title:
  System hangs with kernel 3.19.0-31

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  After installing kernel 3.19.0-31, the system freezes at login. I got
  following error during install, I don't know if that is the reason for
  the freeze.

  sudo dpkg-reconfigure linux-headers-3.19.0-31 linux-
  headers-3.19.0-31-generic

  Examining /etc/kernel/header_postinst.d.
  run-parts: executing /etc/kernel/header_postinst.d/dkms 3.19.0-31-generic /boot/vmlinuz-3.19.0-31-generic
  ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/i915-3.15-3.13-dkms.0.crash'
  Error! Bad return status for module build on kernel: 3.19.0-31-generic (x86_64)
  Consult /var/lib/dkms/i915-3.15-3.13/0.01/build/make.log for more information.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-headers-3.19.0-31-generic 3.19.0-31.35
  ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6
  Uname: Linux 3.19.0-30-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  simon      2192 F.... pulseaudio
   /dev/snd/controlC1:  simon      2192 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Oct  7 12:18:47 2015
  HibernationDevice: RESUME=UUID=c929a208-30d1-4e36-9943-d68352b90a26
  InstallationDate: Installed on 2014-07-28 (435 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Notebook W65_67SZ
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=da3171d0-cb60-47b3-8584-e10466a6c8a9 ro quiet splash acpi_osi=Linux acpi_backlight=vendor vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-30-generic N/A
   linux-backports-modules-3.19.0-30-generic  N/A
   linux-firmware                             1.143.4
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/26/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.03.05
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: W65_67SZ
  dmi.board.vendor: Notebook
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: Notebook
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.03.05:bd02/26/2014:svnNotebook:pnW65_67SZ:pvrNotApplicable:rvnNotebook:rnW65_67SZ:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
  dmi.product.name: W65_67SZ
  dmi.product.version: Not Applicable
  dmi.sys.vendor: Notebook

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