Public bug reported: 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 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug compiz-0.9 has-workaround precise single-occurrence ubuntu -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/934707 Title: emachine e725 boots to black screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/934707/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp