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[Launchpad Bug Tracker <1253155@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.12.0-4.12

---------------
linux (3.12.0-4.12) trusty; urgency=low

  [ Andy Whitcroft ]

  * [Config] switch build-depends to libiberty-dev
    Fixes FTBS
  * Release tracker
    - LP: #1255322
 -- Tim Gardner <tim.gardner@xxxxxxxxxxxxx>   Tue, 26 Nov 2013 14:44:04 -0700

** Changed in: linux (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1253155

Title:
  Failure to validate module signature at boot time

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Saucy:
  Fix Committed
Status in “linux” source package in Trusty:
  Fix Released

Bug description:
  When booting under secureboot and using a signed kernel, it's expected
  that all modules shipped alongside the kernel should validate and load
  successfully without tainting the kernel.

  Unfortunately it doesn't seem to always be the case. Looking through
  my kernel logs, I see:

  Nov 15 10:35:24 castiana kernel: [    1.635132] video: module
  verification failed: signature and/or required key missing - tainting
  kernel

  or

  Nov 12 12:58:48 castiana kernel: [213981.753326] Request for unknown
  module key 'Magrathea: Glacier signing key:
  f440a253eb498df923d438caa09b3b5d99308405' err -11

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.12.0-2-generic 3.12.0-2.7
  ProcVersionSignature: Ubuntu 3.12.0-2.7-generic 3.12.0
  Uname: Linux 3.12.0-2-generic x86_64
  ApportVersion: 2.12.7-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  stgraber   2721 F.... pulseaudio
   /dev/snd/controlC0:  stgraber   2721 F.... pulseaudio
   /dev/snd/pcmC0D0c:   stgraber   2721 F...m pulseaudio
   /dev/snd/pcmC0D0p:   stgraber   2721 F...m pulseaudio
  CurrentDesktop: Unity
  Date: Wed Nov 20 11:59:57 2013
  InstallationDate: Installed on 2013-04-21 (213 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130420)
  MachineType: LENOVO 2306CT0
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.12.0-2-generic.efi.signed root=UUID=14de4e20-b139-488e-863f-ec710f776851 ro quiet splash "acpi_osi=!Windows 2012" vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.12.0-2-generic N/A
   linux-backports-modules-3.12.0-2-generic  N/A
   linux-firmware                            1.117
  SourcePackage: linux
  StagingDrivers: zram
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/27/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G2ET96WW (2.56 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2306CT0
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG2ET96WW(2.56):bd08/27/2013:svnLENOVO:pn2306CT0:pvrThinkPadX230:rvnLENOVO:rn2306CT0:rvrNODPK:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2306CT0
  dmi.product.version: ThinkPad X230
  dmi.sys.vendor: LENOVO

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