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[Bug 1457350] Re: Random Freezing problem


Now, I have  updated the BIOS version to latest one:

    sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
    83ET76WW (1.46 )

I have run the above command showing the BIOS verison. Problem still

In addiditon to this I have updated kernel version to 3.16.x but no luck
here as well.

** Changed in: linux (Ubuntu)
       Status: Expired => New

** Summary changed:

- Random Freezing problem
+ Random Freezing problem with Ubuntu 14.04 LTS, Lenovo Laptop T420

** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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  Random Freezing problem with Ubuntu 14.04 LTS, Lenovo Laptop T420

Status in linux package in Ubuntu:

Bug description:
  Ubuntu 14.04 freezes on Lenovo Thinkpad 420.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-53-generic 3.13.0-53.88
  ProcVersionSignature: Ubuntu 3.13.0-53.88-generic 3.13.11-ckt19
  Uname: Linux 3.13.0-53-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: amd64
   /dev/snd/controlC0:  479153     2639 F.... pulseaudio
  CurrentDesktop: Unity
  CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
  Date: Thu May 21 12:41:14 2015
  InstallationDate: Installed on 2015-02-04 (105 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 4236PA6
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-53-generic root=UUID=f76e0417-cd99-44f8-a4e7-f405327f44be ro quiet splash vt.handoff=7
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/26/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 83ET69WW (1.39 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4236PA6
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr83ET69WW(1.39):bd03/26/2012:svnLENOVO:pn4236PA6:pvrThinkPadT420:rvnLENOVO:rn4236PA6:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4236PA6
  dmi.product.version: ThinkPad T420
  dmi.sys.vendor: LENOVO

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