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When Ubuntu starts up, the back-light is off on my laptop. I can plug
it into an external monitor and the display is fine. I can easily turn
the back-light on with "sudo setpci -s 00:02.0 F4.B=[HEX]" where 00 is
the brightest and FF is off. In past distributions, the GUI-based
brightness utilities did not work and I used this command to change by
back-light brightness. I know that there are many people who can not
use back-light GUI-utilities on the past distributions as well. This
issue also occurs if I close my screen and raise it again.
This issue also effected the installation process as well as when I was
using the i686 installer.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
CompizPlugins:
[core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
CurrentDmesg:
[ 29.430043] eth0: no IPv6 routers present
[ 30.988586] EXT4-fs (sda7): re-mounted. Opts: errors=remount-ro,commit=0
DRM.card0.DP.1:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
DRM.card0.LVDS.1:
status: connected
enabled: enabled
dpms: On
modes: 1366x768
edid-base64:
AP///////wANr5kVAAAAAAcUAQOAIhN4Cj2VlFZPjigmUFQAAAABAQEBAQEBAQEBAQEBAQEBeh1W0lAAHjA8KDYAWMEQAAAYAAAA/gBOMTU2QjMtTDBCCiAgAAAA/gBDTU8KICAgICAgICAgAAAA/gBOMTU2QjMtTDBCCiAgAEg=
DRM.card0.VGA.1:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
Date: Mon Apr 18 21:34:59 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
GdmLog1:
GdmLog2:
GraphicsCard:
Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller
[8086:2a42] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device [1025:0459]
Subsystem: Acer Incorporated [ALI] Device [1025:0459]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
MachineType: eMachines eMachines E527
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic
root=UUID=83376c0e-9440-4ba9-bbdb-363565bf5e72 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/16/2010
dmi.bios.vendor: eMachines
dmi.bios.version: V1.01
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: eMachines E527
dmi.board.vendor: eMachines
dmi.board.version: V1.01
dmi.chassis.type: 10
dmi.chassis.vendor: eMachines
dmi.chassis.version: V1.01
dmi.modalias:
dmi:bvneMachines:bvrV1.01:bd04/16/2010:svneMachines:pneMachinesE527:pvrV1.01:rvneMachines:rneMachinesE527:rvrV1.01:cvneMachines:ct10:cvrV1.01:
dmi.product.name: eMachines E527
dmi.product.version: V1.01
dmi.sys.vendor: eMachines
version.compiz: compiz 1:0.9.4+bzr20110411-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu12
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20110107+b795ca6e-0ubuntu7
** Affects: linux
Importance: Medium
Status: Fix Released
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: amd64 apport-bug bot-stop-nagging compiz-0.9
kernel-bug-exists-upstream laptop-testing natty oneiric precise running-unity
ubuntu
--
8086:2a42 [eMachines E527] On startup, the backlight is off on laptop
https://bugs.launchpad.net/bugs/765438
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