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[Launchpad Bug Tracker <1034222@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/1034222

Title:
  Backlight out for exactly 10 seconds on boot with Acer D255E

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Backlight goes out for exactly 10 seconds before returning while
  booting with an Acer AOD255E netbook. This is a backlight issue, as I
  can shine a flashlight at the screen and still see boot text scrolling
  (after removing splash and quiet).

  With "acpi=off" appended to the kernel line, this no longer occurs (Fn
  key backlight controls still work with this appended). With every
  other acpi option I have tried, this still occurs though. This
  includes "acpi_backlight" and "acpi_display_output". With
  "acpi_backlight=vendor" the entry in /sys/class/backlight changes from
  acpi_video0 to acer_wmi, but backlight still goes out.

  Otherwise backlight works correctly. System info is attached.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-27-generic 3.2.0-27.43
  ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
  Uname: Linux 3.2.0-27-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  dan        1602 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0x98200000 irq 44'
     Mixer name	: 'Realtek ALC272X'
     Components	: 'HDA:10ec0272,10250002,00100001'
     Controls      : 17
     Simple ctrls  : 9
  Date: Tue Aug  7 22:06:09 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: Acer AOD255E
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-27-generic root=UUID=71aeee3a-24a5-4786-a7ac-9898a5917982 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-27-generic N/A
   linux-backports-modules-3.2.0-27-generic  N/A
   linux-firmware                            1.79
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/22/2011
  dmi.bios.vendor: Acer
  dmi.bios.version: V3.16(DDR3)
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: JE02_PT_E
  dmi.board.vendor: Acer
  dmi.board.version: V3.16(DDR3)
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V3.16(DDR3)
  dmi.modalias: dmi:bvnAcer:bvrV3.16(DDR3):bd04/22/2011:svnAcer:pnAOD255E:pvrV3.16(DDR3):rvnAcer:rnJE02_PT_E:rvrV3.16(DDR3):cvnAcer:ct10:cvrV3.16(DDR3):
  dmi.product.name: AOD255E
  dmi.product.version: V3.16(DDR3)
  dmi.sys.vendor: Acer

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