← Back to team overview

kernel-packages team mailing list archive

[Bug 1226191] Re: Brightness Control regression in 3.11 on Thinkpad X230


AlexC, thank you for reporting this bug to Ubuntu. Saucy reached EOL on July 17, 2014.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

Is this an issue in a supported release? If so, could you please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 1226191

** Package changed: ubuntu => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

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

You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.

  Brightness Control regression in 3.11 on Thinkpad X230

Status in “linux” package in Ubuntu:

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


  9 levels of brightness adjustment using Function Keys


  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


  13.10 i386 beta (Upgraded from 13.04)


  Lenovo Thinkpad X230
  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
   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
   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:
  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.logfile: /var/log/Xorg.0.log
   product id                                 728 
   vendor                                     LGD
  xserver.version: 2:

To manage notifications about this bug go to: