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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Norber.OK, as per
www.dell.com/support/drivers/us/en/19/DriverDetails?driverId=R301708&fileId=2731109636
an update is available for your BIOS (A15). If you update to this, does
it change anything?

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Thank you for your understanding.

** Tags added: bios-outdated-a15 regression-potential

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

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https://bugs.launchpad.net/bugs/1052245

Title:
  Turning system off: Unable to handle kernel paging request

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Sometimes when I reboot, other times when I turn system off, I'm
  getting message like:

  BUG: Unable to handle kernel paging request at ffffc900111d6000 ...

  Looking at the address I have seen that it is not always the same, when I turn off the system, each time I turn off or reboot and see this behavior, the address shown has changed . I've got at least these addresses, one address per time the behavior has been seen:
  ffffc900111d6000
  ffffc900110ca600
  ffffc900111dc600
  ffffc900110bd000
  ffffc900110da600
  and perhaps these are not the only ones.

  After this message (BUG: Unable ...) there is shown a lot of trace
  info that stop with a message like "end of trace" or something
  similar, and after a pause of few seconds, again a lot of trace info
  is shown ending again with a message like "end of trace". It is done
  for some times untill it "apparently" does no more, "apparently" it
  hangs on. I say "apparently" because I haven't  been patient to wait
  more than 2 minutes, then I hard turn off by pressing the power button
  during 5 seconds.

  Every time it happens, when I turn on next time, I see a lot o orphan
  i-nodes being repared in my /home partition.

  I can see these messages at the beginning and at the power down because in my grub.cfg I have no "ro quiet ..." text in the kernel line, I mean in the menuentry, the one that begins:
  linux	/vmlinuz-3.2.0-30-generic root=UUID=.....

  More data: I have:
  ubuntu 12.04 with kernel linux 3.2.0-30-generic    64 bits
  laptop dell studio xps 16
  4 GB RAM

  Let me know if you need more info to solve this.
  Thanks in advance
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu13
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  norber     2875 F.... pulseaudio
   /dev/snd/controlC0:  norber     2875 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfc400000 irq 47'
     Mixer name	: 'IDT 92HD73C1X5'
     Components	: 'HDA:111d7675,10280272,00100103'
     Controls      : 17
     Simple ctrls  : 10
  Card1.Amixer.info:
   Card hw:1 'HDMI'/'HDA ATI HDMI at 0xcfeec000 irq 48'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100100'
     Controls      : 6
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  DistroRelease: Ubuntu 12.04
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=4e10a215-07aa-48c6-8756-9671e4166b7f
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: Dell Inc. Studio XPS 1640
  NonfreeKernelModules: fglrx
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=es_ES.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-30-generic root=UUID=4bd41706-e146-4f0f-a773-f11ed71f4fed
  ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-30-generic N/A
   linux-backports-modules-3.2.0-30-generic  N/A
   linux-firmware                            1.79.1
  Tags:  precise running-unity
  Uname: Linux 3.2.0-30-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  dmi.bios.date: 07/23/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 0Y537R
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A10
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A10
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd07/23/2009:svnDellInc.:pnStudioXPS1640:pvrA103:rvnDellInc.:rn0Y537R:rvrA10:cvnDellInc.:ct8:cvrA10:
  dmi.product.name: Studio XPS 1640
  dmi.product.version: A103
  dmi.sys.vendor: Dell Inc.

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