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This might be related to bug #525038. When starting up, the screen goes
black (actually it looks like the backlight is not on) either instantly
when plymouth starts or a few seconds after. The login screen appears, I
typed my password and the screen is still black after logging in.

However, if I press F2 (decrease brightness) or F3 (increase
brightness), not Fn + F2 or F3, then the display will come back on
instantly. If I increase the brightness to its maximum setting and then
decrease the brightness to the minimum setting using F2 & F3
respectively, I get the same effect when plymouth starts (no backlight).

The brightness indicator that ubuntu shows when adjusting the brightness gives me only four levels going from 100% to 0%: 
0 = 100% Brightness
1 = 60% Brightness
2 = 15% Brightness
3 = No backlight;

and 3 levels when going from 0% to 100%
0 = 40%
1 = 80%
2 = 100%

That's all the info I can give for now. If I wanted to get the Fn key
working what package would I report that against?

Thanks

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,mousepoll,wall,regex,snap,grid,imgpng,move,place,animation,resize,vpswitch,session,expo,unitymtgrabhandles,gnomecompat,fade,workarounds,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Mon Sep 19 21:42:24 2011
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:1672]
 ATI Technologies Inc NI Seymour [AMD Radeon HD 6470M] [1002:6760] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:1672]
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 003: ID 05c8:021e Cheng Uei Precision Industry Co., Ltd (Foxlink)
MachineType: Hewlett-Packard HP Pavilion g7 Notebook PC
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-11-generic root=UUID=4f73a571-a2eb-463f-a0b7-c04d93acd93f ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/28/2011
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.32
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1672
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 09.36
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.32:bd07/28/2011:svnHewlett-Packard:pnHPPaviliong7NotebookPC:pvr0593110000204610000620100:rvnHewlett-Packard:rn1672:rvr09.36:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion g7 Notebook PC
dmi.product.version: 0593110000204610000620100
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.5.94+bzr2803-0ubuntu5
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

** Affects: gnome-settings-daemon (Ubuntu)
     Importance: Medium
         Status: New


** Tags: amd64 apport-bug compiz-0.9 oneiric running-unity ubuntu
-- 
Logon screen black
https://bugs.launchpad.net/bugs/854185
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