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[Launchpad Bug Tracker <1226191@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/1226191

Title:
  Brightness Control regression in 3.11 on Thinkpad X230

Status in linux package in Ubuntu:
  Expired

Bug description:
  Brightness control using Fn + F8/F9 has regressed from the 3.8 kernel
  used in 13.04.

  Expected:

  9 levels of brightness adjustment using Function Keys

  Experienced:

  5 levels of brightness adjustment with blank levels with "blank"
  levels where a key press results in no brightness change even though
  indicator showed change.

  Regression proved by reverting to 3.8 kernel resulting in expected
  behaviour.

  Software:

  13.10 i386 beta (Upgraded from 13.04)

  Hardware:

  Lenovo Thinkpad X230
  --- 
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.12.1-0ubuntu4
  Architecture: i386
  CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,imgpng,move,grid,resize,unitymtgrabhandles,vpswitch,regex,mousepoll,place,gnomecompat,snap,animation,expo,wall,ezoom,session,fade,scale,workarounds,unityshell]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  DistUpgraded: 2013-09-15 23:42:20,315 DEBUG enabling apt cron job
  DistroCodename: saucy
  DistroRelease: Ubuntu 13.10
  DistroVariant: ubuntu
  DkmsStatus:
   vboxhost, 4.2.12, 3.11.0-7-generic, i686: installed
   vboxhost, 4.2.12, 3.8.0-29-generic, i686: installed
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21fa]
  InstallationDate: Installed on 2012-03-20 (544 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  MachineType: LENOVO 2325AEG
  MarkForUpload: True
  Package: xorg-server (not installed)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-7-generic root=UUID=7b7b41ce-ce89-42c9-b8fd-406c62bb040e ro quiet splash pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 i915.semaphores=1 drm.vblankoffdelay=1 vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0
  Tags:  saucy ubuntu regression single-occurrence reproducible compiz-0.9
  Uname: Linux 3.11.0-7-generic i686
  UpgradeStatus: Upgraded to saucy on 2013-09-15 (0 days ago)
  UserGroups: adm admin cdrom debian-tor dialout lpadmin plugdev sambashare
  dmi.bios.date: 02/22/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G2ET92WW (2.52 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2325AEG
  dmi.board.vendor: LENOVO
  dmi.board.version: Win8 Pro DPK TPG
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG2ET92WW(2.52):bd02/22/2013:svnLENOVO:pn2325AEG:pvrThinkPadX230:rvnLENOVO:rn2325AEG:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2325AEG
  dmi.product.version: ThinkPad X230
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.10+13.10.20130828.2-0ubuntu1
  version.libdrm2: libdrm2 2.4.46-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 9.2-1ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu6
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
  xserver.bootTime: Mon Sep 16 19:20:25 2013
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                 728 
   vendor                                     LGD
  xserver.version: 2:1.14.2.901-2ubuntu4

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