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[Siddu <1093217@xxxxxxxxxxxxxxxxxx>]

I haven't experienced it. Are you running any graphics kernel modules, such
as the NVIDIA or AMD proprietary drivers? What version of Ubuntu are you
on? I recall that such a bug used to exist in the Intel Graphics Stack for
Ivy Bridge GPUs, but it has since been fixed. I'm not quite sure which
kernel version the fix was released with, but I think that Precise is still
affected.

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https://bugs.launchpad.net/bugs/1093217

Title:
  8086:0166 [Lenovo IdeaPad Z580] 12.04-13.10 10-20min boot delay (From
  3.2.0.29->3.12-rc2)

Status in The Linux Kernel:
  Unknown
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  On updating the kernel from 3.2.0.29 to any later version (3.2.0.30)
  and above, Ubuntu will not boot. I see a blank screen with a cursor
  but nothing happens after that.

  Trying to boot into recovery mode is not useful either.

  Booting into an older version of the kernel (3.2.0.29) is successful.

  I have seen this issue with all kernels after 3.2.0.29 till date :
  3.2.0.31, 3.2.0.32, 3.2.0.33, 3.2.0.34, 3.2.0.35

  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu15.1
  Architecture: i386, AMD64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  abhishek   2104 F.... pulseaudio
   /dev/snd/pcmC0D0p:   abhishek   2104 F...m pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf0610000 irq 46'
     Mixer name	: 'Intel PantherPoint HDMI'
     Components	: 'HDA:10ec0269,17aa4022,00100202 HDA:80862806,80860101,00100000'
     Controls      : 26
     Simple ctrls  : 12
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=4b3dd96d-8b88-4dbf-97d4-e2d78e5ad0fc
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120817.3)
  MachineType: LENOVO IdeaPad Z580
  MarkForUpload: True
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic-pae root=UUID=a24e74a5-a245-4b37-b63c-96869939bf5c ro quiet splash
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic-pae 3.2.24
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-29-generic-pae N/A
   linux-backports-modules-3.2.0-29-generic-pae  N/A
   linux-firmware                                1.79.1
  StagingDrivers: rts5139 mei
  Tags:  precise running-unity staging
  Uname: Linux 3.2.0-29-generic-pae i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin netdev plugdev sambashare sudo
  dmi.bios.date: 06/11/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 5FCN34WW
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Lenovo
  dmi.board.vendor: LENOVO
  dmi.board.version: Lenovo Z580
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: Intel Corporation
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnLENOVO:bvr5FCN34WW:bd06/11/2012:svnLENOVO:pnIdeaPadZ580:pvrLenovoZ580:rvnLENOVO:rnLenovo:rvrLenovoZ580:cvnIntelCorporation:ct9:cvr0.1:
  dmi.product.name: IdeaPad Z580
  dmi.product.version: Lenovo Z580
  dmi.sys.vendor: LENOVO

  These logs were collected from 3.2.0.29 version which boots
  successfully

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