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[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

apport information

** Attachment added: "Card1.Codecs.codec.0.txt"
   https://bugs.launchpad.net/bugs/1231305/+attachment/3841864/+files/Card1.Codecs.codec.0.txt

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https://bugs.launchpad.net/bugs/1231305

Title:
  Unable to adjust screenbrightness with Intel Haswell-ULT Integrated
  Graphics Controller [8086:0a26]

Status in “linux-lts-raring” package in Ubuntu:
  New

Bug description:
  CID: 201304-13196 Dell Inspiron 5537

  Unable to adjust the screen brightness on this system.
  Tested with 3.8.0-29 and 3.8.0-30 kernel.

  Step:
  1. Install 12.04.3 and boot to desktop.
  2. Try to adjust brightness with the brightness keys.
  2. Try to adjust brightness in "Brightness and Lock" of System settings.

  Expected result:
  Brightness could be adjusted by using the brightness keys and by adjusting in "Brightness and Lock" of System settings.

  Actual result:
  1. Brightness keys events (keycode 224/225) were captured, but the brightness cannot be adjusted. Brightness level indiciator only changes between Max and Max - 1
  2. Brightness cannot be adjusted in "Brightness and Lock" of System settings.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.8.0-30-generic 3.8.0-30.44~precise1
  ProcVersionSignature: Ubuntu 3.8.0-30.44~precise1-generic 3.8.13.6
  Uname: Linux 3.8.0-30-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: amd64
  Date: Thu Sep 26 03:22:41 2013
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-lts-raring
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.8.0-30-generic.
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 1: PCH [HDA Intel PCH], device 0: ALC283 Analog [ALC283 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     1568 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     1568 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'MID'/'HDA Intel MID at 0xb0710000 irq 64'
     Mixer name	: 'Intel Haswell HDMI'
     Components	: 'HDA:80862807,80860101,00100000'
     Controls      : 21
     Simple ctrls  : 3
  Card1.Amixer.info:
   Card hw:1 'PCH'/'HDA Intel PCH at 0xb0714000 irq 65'
     Mixer name	: 'Realtek ALC283'
     Components	: 'HDA:10ec0283,102805e9,00100003'
     Controls      : 16
     Simple ctrls  : 7
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=a388e401-3402-40ed-bdb8-c40bbaeb1e5c
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: Dell Inc. Inspiron 5537
  MarkForUpload: True
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-30-generic root=UUID=e724f925-9468-444f-987f-46d3c29b1ada ro quiet splash initcall_debug vt.handoff=7
  ProcVersionSignature: Ubuntu 3.8.0-30.44~precise1-generic 3.8.13.6
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-30-generic N/A
   linux-backports-modules-3.8.0-30-generic  N/A
   linux-firmware                            1.79.6
  RfKill:
   1: hci0: Bluetooth
   	Soft blocked: no
   	Hard blocked: no
  StagingDrivers: rts5139
  Tags:  precise running-unity staging
  Uname: Linux 3.8.0-30-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 04/10/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: X12
  dmi.board.name: Inspiron 5537
  dmi.board.vendor: Dell Inc.
  dmi.board.version: X12
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: X12
  dmi.modalias: dmi:bvnDellInc.:bvrX12:bd04/10/2013:svnDellInc.:pnInspiron5537:pvr1747:rvnDellInc.:rnInspiron5537:rvrX12:cvnDellInc.:ct8:cvrX12:
  dmi.product.name: Inspiron 5537
  dmi.product.version: 1747
  dmi.sys.vendor: Dell Inc.

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