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[Launchpad Bug Tracker <1183856@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.11.0-9.16

---------------
linux (3.11.0-9.16) saucy; urgency=low

  [ Andy Whitcroft ]

  * Revert "SAUCE: (no-up) scsi: hyper-v storage -- mark as preferring READ
    CAPACITY (16) at SPC-2"
  * Revert "SAUCE: (no-up) scsi: hyper-v storage -- mark as VPD capable at
    SPC-2"
  * Revert "SAUCE: (no-up) scsi: add scsi device flag to request READ
    CAPACITY (16) be preferred"
  * Revert "SAUCE: (no-up) scsi: add scsi device flag to request VPD pages
    be used at SPC-2"

  [ Seth Forshee ]

  * SAUCE: (no-up) ACPI: Disable Windows 8 compatibility for some Lenovo
    ThinkPads
    - LP: #1183856

  [ Tim Gardner ]

  * [Config] CONFIG_CRYPTO_CRCT10DIF=y, CONFIG_CRYPTO_CRCT10DIF_PCLMUL=m
  * [packaging] Bump ABI for every new release
  * rebase to v3.11.2
  * Release tracker
    - LP: #1231999


  [ Upstream Kernel Changes ]

  * scsi: hyper-v storsvc switch up to SPC-3
  * perf/x86: Add Silvermont (22nm Atom) support
    - LP: #1091539
  * perf/x86/intel: Fix Silvermont offcore masks
    - LP: #1091539
  * modules: add support for soft module dependencies
    - LP: #1188010
  * Reinstate "crypto: crct10dif - Wrap crc_t10dif function all to use
    crypto transform framework"
    - LP: #1188010
  * skge: fix broken driver
    - LP: #1216745
  * Input: cypress_ps2 - Return zero finger count if palm is detected.
    - LP: #1229361
  * udf: Standardize return values in mount sequence
    - LP: #1228751
  * udf: Refuse RW mount of the filesystem instead of making it RO
    - LP: #1228751
  * rebase to v3.11.2
 -- Tim Gardner <tim.gardner@xxxxxxxxxxxxx>   Mon, 23 Sep 2013 07:41:07 -0600

** Changed in: linux (Ubuntu Saucy)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1183856

Title:
  Brightness control on Lenovo ThinkPad T430 does not work.

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Raring:
  Fix Released
Status in “linux” source package in Saucy:
  Fix Released

Bug description:
  == Raring SRU Justification ==

  Impact: A bug in the ACPI tables causes the ACPI backlight interface
  to fail to apply brightness changes with kernels claiming Windows 8
  compatibility. This interface is generally the first choice of
  userspace, and users are unable to adjust the brightness using GUI
  tools.

  Fix: Quirk the affected model to disable Windows 8 compatibility. This
  causes the AML to fall back to the pre-Win8 behavior, which functions
  correctly.

  Test case: Verify on an affected machine. Verified on LP #1183856.

  ---

  FN-Keys don't work for me on my ThinkPad T430.

  When i'm on battery mode the screen does not dim down to save power,
  even not with the workaround.

  The problem exists since the release of Ubuntu 13.04

  My actual Kernel: 3.8.0-22-generic

  For the T430s the problem seems to be fixed:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1098216

  WORKAROUND:

  Add to /etc/default/grub
  in the variable "GRUB_CMDLINE_LINUX_DEFAULT":

  acpi_osi=\"!Windows 2012\"

  e.g:

  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=\"!Windows 2012\""

  Then run "sudo update-grub".

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-22-generic 3.8.0-22.33
  ProcVersionSignature: Ubuntu 3.8.0-22.33-generic 3.8.11
  Uname: Linux 3.8.0-22-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  felix      2436 F.... pulseaudio
   /dev/snd/controlC0:  felix      2436 F.... pulseaudio
   /dev/snd/controlC1:  felix      2436 F.... pulseaudio
  Date: Fri May 24 17:05:25 2013
  HibernationDevice: RESUME=UUID=a3e1a0e4-da74-4961-a4df-d5a5ccae333d
  InstallationDate: Installed on 2013-05-22 (1 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: LENOVO 2349D17
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-22-generic root=UUID=c3662fb4-16b3-4a1d-808d-9530ba42ab52 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-22-generic N/A
   linux-backports-modules-3.8.0-22-generic  N/A
   linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/22/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G1ET94WW (2.54 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2349D17
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG1ET94WW(2.54):bd04/22/2013:svnLENOVO:pn2349D17:pvrThinkPadT430:rvnLENOVO:rn2349D17:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2349D17
  dmi.product.version: ThinkPad T430
  dmi.sys.vendor: LENOVO

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