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[misko <907555@xxxxxxxxxxxxxxxxxx>]

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https://bugs.launchpad.net/bugs/907555

Title:
  Brightness-Troubles with Acer Travelmate 8481TG

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  On an Acer Travelmate 8481TG using the default-config, the screen's
  brightness can't be controlled (with Fn+cursor-key), altought the
  event is recognized (and displayed in a popup in the upper right
  corner of the screen).

  With the kernel-parameter "acpi_backlight=vendor" the brightness-
  control works (with Function-Key), but then another problem arises:
  When the screen is switched of via DPMS (automatically after 10
  minutes, or manually with "xset dpms force off"), it can't be
  reactivated by moving the mouse or pressing any key (as without
  acpi_backlight=vendor), instead the screen has to be reactivated with
  the brightnes-control-keys (which does not work while the screen is
  locked).

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-14-generic 3.0.0-14.23
  ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
  Uname: Linux 3.0.0-14-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC271X Analog [ALC271X Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC271X Analog [ALC271X Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  misko      1757 F.... pulseaudio
  CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xd3c00000 irq 45'
     Mixer name	: 'Realtek ALC271X'
     Components	: 'HDA:10ec0269,10250567,00100100'
     Controls      : 14
     Simple ctrls  : 9
  Date: Wed Dec 21 23:11:30 2011
  HibernationDevice: RESUME=UUID=d7575c4e-9a01-4e85-9867-c0dd51aedfed
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MachineType: Acer TravelMate 8481TG
  ProcEnviron:
   LANGUAGE=de_AT:de
   PATH=(custom, no user)
   LANG=de_AT.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic root=UUID=f7b72e2b-e9bc-49a1-8b42-4e4f726f787a ro i915.i915_enable_rc6=1 quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-14-generic N/A
   linux-backports-modules-3.0.0-14-generic  N/A
   linux-firmware                            1.60
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  StagingDrivers: rts_pstor mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/28/2011
  dmi.bios.vendor: Acer
  dmi.bios.version: V2.06
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: BA41_HS
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V2.06
  dmi.modalias: dmi:bvnAcer:bvrV2.06:bd10/28/2011:svnAcer:pnTravelMate8481TG:pvrV2.06:rvnAcer:rnBA41_HS:rvrBaseBoardVersion:cvnAcer:ct10:cvrV2.06:
  dmi.product.name: TravelMate 8481TG
  dmi.product.version: V2.06
  dmi.sys.vendor: Acer
  --- 
  ApportVersion: 2.12.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     2750 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     2750 F.... pulseaudio
  CasperVersion: 1.336
  DistroRelease: Ubuntu 13.10
  LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130906)
  MachineType: Acer TravelMate 8481TG
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB:
   0 nouveaufb
   1 inteldrmfb
  ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --
  ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-4-generic N/A
   linux-backports-modules-3.11.0-4-generic  N/A
   linux-firmware                            1.113
  Tags:  saucy
  Uname: Linux 3.11.0-4-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 04/24/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V2.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: BA41_HS
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V2.13
  dmi.modalias: dmi:bvnAcer:bvrV2.13:bd04/24/2012:svnAcer:pnTravelMate8481TG:pvrV2.13:rvnAcer:rnBA41_HS:rvrBaseBoardVersion:cvnAcer:ct10:cvrV2.13:
  dmi.product.name: TravelMate 8481TG
  dmi.product.version: V2.13
  dmi.sys.vendor: Acer

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