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[Launchpad Bug Tracker <706303@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/706303

Title:
  LCD screen brightness is not adapted on AC/Battery state change

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Fn-left and Fn-right control the brightness correctly (with a nice indicator popup)
  The brightness slider in gnome-power-manager has no effect (It does seem to change the value in /proc/acpi/video/OVGA/DD02/brightness)
  xbacklight -set 50 does not work.
  setpci -s 00:02.0 F4.B=FF to 
  setpci -s 00:02.0 F4.B=00 controls the brightness over the entire range.
  I tried acpi_backlight=vendor as boot option but that does not make any difference (this used to be a workaround for 10.04)

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: xorg 1:7.5+6ubuntu3
  ProcVersionSignature: Ubuntu 2.6.35-24.42-generic-pae 2.6.35.8
  Uname: Linux 2.6.35-24-generic-pae i686
  Architecture: i386
  DRM.card0.DisplayPort.1:
   status: disconnected
   enabled: disabled
   dpms: On
   modes: 
   edid-base64:
  DRM.card0.DisplayPort.2:
   status: disconnected
   enabled: disabled
   dpms: On
   modes: 
   edid-base64:
  DRM.card0.HDMI_Type_A.1:
   status: disconnected
   enabled: disabled
   dpms: On
   modes: 
   edid-base64:
  DRM.card0.LVDS.1:
   status: connected
   enabled: enabled
   dpms: On
   modes: 1366x768
   edid-base64: AP///////wAGrzwhAAAAAAESAQOAHxF4Cgnll1dUkyciUFQAAAABAQEBAQEBAQEBAQEBAQEBIBxWgFAAIzAwIDYANa4QAAAYAAAADwAAAAAAAAAAAAAAAAAgAAAA/gBBVU8KICAgICAgICAgAAAA/gBCMTQwWFcwMiBWMSAKALI=
  DRM.card0.VGA.1:
   status: disconnected
   enabled: disabled
   dpms: On
   modes: 
   edid-base64:
  Date: Sat Jan 22 15:36:02 2011
  InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
  MachineType: Acer Aspire 4810T
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-24-generic-pae root=/dev/mapper/vg-root_10.10 ro i8042.nomux quiet splash vga=792
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: xorg
  Symptom: display
  dmi.bios.date: 04/13/2010
  dmi.bios.vendor: INSYDE
  dmi.bios.version: V1.35
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Aspire 4810T
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 1
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnINSYDE:bvrV1.35:bd04/13/2010:svnAcer:pnAspire4810T:pvrV1.35:rvnAcer:rnAspire4810T:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion:
  dmi.product.name: Aspire 4810T
  dmi.product.version: V1.35
  dmi.sys.vendor: Acer
  glxinfo: Error: [Errno 2] No such file or directory
  system:
   distro:             Ubuntu
   codename:           maverick
   architecture:       i686
   kernel:             2.6.35-24-generic-pae
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  thba      20308 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xd4400000 irq 45'
     Mixer name	: 'Intel Cantiga HDMI'
     Components	: 'HDA:10ec0269,1025022a,00100004 HDA:80862802,80860101,00100000'
     Controls      : 21
     Simple ctrls  : 10
  DistroRelease: Ubuntu 11.04
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  MachineType: Acer Aspire 4810T
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-8-generic-pae root=/dev/mapper/vg-root_11.04 ro resume=/dev/vg/swap1104
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
  RelatedPackageVersions:
   linux-restricted-modules-2.6.38-8-generic-pae N/A
   linux-backports-modules-2.6.38-8-generic-pae  N/A
   linux-firmware                                1.52
  Tags:  natty
  Uname: Linux 2.6.38-8-generic-pae i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin audio cdrom dialout fuse lpadmin plugdev sambashare sudo video
  dmi.bios.date: 04/13/2010
  dmi.bios.vendor: INSYDE
  dmi.bios.version: V1.35
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Aspire 4810T
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 1
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnINSYDE:bvrV1.35:bd04/13/2010:svnAcer:pnAspire4810T:pvrV1.35:rvnAcer:rnAspire4810T:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion:
  dmi.product.name: Aspire 4810T
  dmi.product.version: V1.35
  dmi.sys.vendor: Acer

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