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[victor godayer <godayerv@xxxxxxxxx>]

I've checked out, to reinstall previous mainline kernel. Indeed it
occured as well.

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https://bugs.launchpad.net/bugs/1183952

Title:
  System freezes on shutdown or reboot

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  When I try to either to shutdown or reboot my computer, the system freezes on the splash screen.
  Pressing escape key takes me to the black screen with the cursor blanking, and the last line shows "acpid:exiting" and nothing more.

  I've tried several workarounds proposed in vain:
  - adding relevant parameters to the kernel image at boot time by modifying the /etc/default/grub file, calling update-grub afterwards.
  - removing/adding ati video driver.

  I took a look to dmesg logs to find out what was wrong, but could not
  find anything relevant (at least to my eyes).

  I don't know if my bug report has the expected shape, first time in
  the world of bug reports...

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-44-generic 3.2.0-44.69
  ProcVersionSignature: Ubuntu 3.2.0-44.69-generic 3.2.44
  Uname: Linux 3.2.0-44-generic x86_64
  NonfreeKernelModules: fglrx
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu17.2
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 1: Generic_1 [HD-Audio Generic], device 0: ALC269VC Analog [ALC269VC Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  victorinox   1916 F.... pulseaudio
   /dev/snd/controlC0:  victorinox   1916 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Generic'/'HD-Audio Generic at 0xf0344000 irq 48'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,104d6b00,00100200'
     Controls      : 6
     Simple ctrls  : 1
  Card0.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Card1.Amixer.info:
   Card hw:1 'Generic_1'/'HD-Audio Generic at 0xf0340000 irq 49'
     Mixer name	: 'Realtek ALC269VC'
     Components	: 'HDA:10ec0269,104d6b00,00100202'
     Controls      : 19
     Simple ctrls  : 11
  Date: Fri May 24 19:43:12 2013
  HibernationDevice: RESUME=UUID=291ee30e-1597-4998-aea6-a2668d8c44c8
  InstallationMedia: Lubuntu 12.04 "Precise Pangolin" - Release amd64 (20120423)
  MachineType: Sony Corporation SVE11115EHB
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-44-generic root=UUID=5eeb5d59-79bf-41d9-88b3-4a0bf38d6fba ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-44-generic N/A
   linux-backports-modules-3.2.0-44-generic  N/A
   linux-firmware                            1.79.4
  SourcePackage: linux
  StagingDrivers: rts_pstor
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/22/2012
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: R0150E8
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnInsydeCorp.:bvrR0150E8:bd05/22/2012:svnSonyCorporation:pnSVE11115EHB:pvrC60B1LGS:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: SVE11115EHB
  dmi.product.version: C60B1LGS
  dmi.sys.vendor: Sony Corporation

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