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[Launchpad Bug Tracker <1098912@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

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

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https://bugs.launchpad.net/bugs/1098912

Title:
  Laptop luminosity switch makes high CPU usage

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Hello,

  The bug is as follows:

  If I try and switch the luminosity setting of my laptop my CPU goes to
  100% usage for 3-10 minutes, and the luminosity notification in unity
  (the one in the top right corner) flashes for the same amount of time.

  I am not sure if it is a linux bug or how to trace it. Please help.

  My laptop is an MSI EX705-X.
  --- 
  ApportVersion: 2.6.1-0ubuntu9
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  matzipan   2089 F.... pulseaudio
   /dev/snd/controlC0:  matzipan   2089 F.... pulseaudio
  DistroRelease: Ubuntu 12.10
  HibernationDevice: RESUME=UUID=ef237065-cd34-4f9b-bcaf-cb850b466508
  InstallationDate: Installed on 2012-11-05 (68 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
  MachineType: Micro-Star International EX705
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-21-generic root=UUID=0b26ea65-9761-4246-87dd-a0580e519414 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
  RelatedPackageVersions:
   linux-restricted-modules-3.5.0-21-generic N/A
   linux-backports-modules-3.5.0-21-generic  N/A
   linux-firmware                            1.95
  Tags:  quantal running-unity
  Uname: Linux 3.5.0-21-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 12/02/2008
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080014
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: MS-1719x
  dmi.board.vendor: MSI
  dmi.board.version: Ver 1.000
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 10
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd12/02/2008:svnMicro-StarInternational:pnEX705:pvrVer1.000:rvnMSI:rnMS-1719x:rvrVer1.000:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
  dmi.product.name: EX705
  dmi.product.version: Ver 1.000
  dmi.sys.vendor: Micro-Star International

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