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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

*** This bug is a duplicate of bug 765438 ***
    https://bugs.launchpad.net/bugs/765438

** Summary changed:

- emachine e725 boots to valid display with no backlight
+ 8086:2a42 emachine e725 boots to valid display with no backlight

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https://bugs.launchpad.net/bugs/934707

Title:
  8086:2a42 emachine e725 boots to valid display with no backlight

Status in The Linux Kernel:
  Incomplete
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Booting to a black screen, however a flashlight shows a faint login window.  I can login, hear the startup sound, but still a black screen.
  Again a flashlight on the screen shows a faint desktop.  I am assuming the backlight on the laptop is not responding.  Pressing the function key and brightness adjustment keys does nothing.

  As a work around, adding the boot paramater acip_osi=Linux to Grub on
  startup allows me to have a screen,  However, the function dim keys
  make it brighter while the function brighter keys make the screen
  dimmer.

  lsb_release -rd
  Description:	Ubuntu precise (development branch)
  Release:	12.04

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: xorg 1:7.6+10ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-16.25-generic 3.2.6
  Uname: Linux 3.2.0-16-generic x86_64
  NonfreeKernelModules: wl
  .tmp.unity.support.test.0:
   
  ApportVersion: 1.91-0ubuntu1
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,dbus,mousepoll,regex,imgpng,gnomecompat,place,animation,session,move,resize,snap,vpswitch,winrules,grid,fade,workarounds,cube,expo,ezoom,scale,rotate,unityshell]
  CompositorRunning: compiz
  Date: Fri Feb 17 22:26:05 2012
  DistUpgraded: Fresh install
  DistroCodename: precise
  DistroVariant: ubuntu
  DkmsStatus:
   bcmwl, 5.100.82.38+bdcom, 3.2.0-15-generic, x86_64: installed
   bcmwl, 5.100.82.38+bdcom, 3.2.0-16-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Acer Incorporated [ALI] Device [1025:0212]
     Subsystem: Acer Incorporated [ALI] Device [1025:0212]
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120119)
  MachineType: eMachines eMachines E725
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-16-generic root=UUID=5dad1fe6-2c79-4412-ae39-0307a2f6db3e ro acpi_osi=Linux
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/16/2009
  dmi.bios.vendor: eMachines
  dmi.bios.version: V3.04
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: eMachines E725
  dmi.board.vendor: eMachines
  dmi.board.version: V3.04
  dmi.chassis.type: 10
  dmi.chassis.vendor: eMachines
  dmi.chassis.version: V3.04
  dmi.modalias: dmi:bvneMachines:bvrV3.04:bd12/16/2009:svneMachines:pneMachinesE725:pvrV3.04:rvneMachines:rneMachinesE725:rvrV3.04:cvneMachines:ct10:cvrV3.04:
  dmi.product.name: eMachines E725
  dmi.product.version: V3.04
  dmi.sys.vendor: eMachines
  version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu4
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.30-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 8.0~rc2-0ubuntu5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 8.0~rc2-0ubuntu5
  version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

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