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[Launchpad Bug Tracker <1088729@xxxxxxxxxxxxxxxxxx>]

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Xorg shows a black screen and drops back to a command prompt when
booting with linux-image-3.5.0-19-generic

Xorg works fine with linux-image-3.5.0-17-generic.

FYI, I'm using the following command in /etc/rc.local and cron to turn on the backlight:
/usr/bin/setpci -s 00:02.0 F4.B=20>/dev/null

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Mon Dec 10 18:57:41 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:020e]
   Subsystem: Acer Incorporated [ALI] Device [1025:020e]
InstallationDate: Installed on 2012-12-07 (3 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: Gateway NV78
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-17-generic root=UUID=47bd4fd4-e732-4a60-b2f1-d650492daa3f ro rootflags=subvol=@ quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg crash
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/29/2009
dmi.bios.vendor: Gateway
dmi.bios.version: V2.07
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: NV78
dmi.board.vendor: Gateway
dmi.board.version: V2.07
dmi.chassis.type: 10
dmi.chassis.vendor: Gateway
dmi.chassis.version: V2.07
dmi.modalias: dmi:bvnGateway:bvrV2.07:bd09/29/2009:svnGateway:pnNV78:pvrV2.07:rvnGateway:rnNV78:rvrV2.07:cvnGateway:ct10:cvrV2.07:
dmi.product.name: NV78
dmi.product.version: V2.07
dmi.sys.vendor: Gateway
version.compiz: compiz 1:0.9.8.4+bzr3412-0ubuntu0.1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

** Affects: linux (Ubuntu)
     Importance: High
         Status: Incomplete


** Tags: amd64 apport-bug bios-outdated-2.11 compiz-0.9 crash quantal regression-release running-unity ubuntu
-- 
Xorg doesn't start with linux-image-3.5.0-19-generic
https://bugs.launchpad.net/bugs/1088729
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