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I have Ubuntu 12.04 and an NVidia graphics cars, I have the NVidia
drivers installed and it usually works fine (well, except for the
endless nvidia driver bugs). I have two screens configured.

Usually I can run "NVidia Settings" and set up screen resolutions, twin
view, etc.

I installed the pae kernel with "apt-get install linux-pae-generic" (or
something like that), then I rebooted (with the pae kernel) and my
second monitor stopped working. So I tried to run NVidia Settings but I
got the message "You don't seem to be using an NVidia X Driver".

I rebooted with the old normal non-pae kernen and everything works as
before.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-33-generic 3.2.0-33.52
ProcVersionSignature: Ubuntu 3.2.0-33.52-generic 3.2.31
Uname: Linux 3.2.0-33-generic i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu15
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  teo        2466 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfebf8000 irq 49'
   Mixer name   : 'Realtek ALC660-VD'
   Components   : 'HDA:10ec0660,10430000,00100001 
HDA:10573055,10431316,00100700'
   Controls      : 28
   Simple ctrls  : 16
Date: Fri Nov 16 20:32:36 2012
HibernationDevice: RESUME=UUID=b1b3e5fe-38e2-44c9-9e48-4564cd9f4d66
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: ASUSTeK Computer Inc. M51Sn
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-33-generic 
root=UUID=173acbf5-26a0-49e3-8d2b-f1c142582cbf ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-33-generic N/A
 linux-backports-modules-3.2.0-33-generic  N/A
 linux-firmware                            1.79.1
SourcePackage: linux
StagingDrivers: zram
UpgradeStatus: Upgraded to precise on 2012-05-17 (183 days ago)
UserAsoundrc:
 pcm.!default { type pulse }
 ctl.!default { type pulse }
 pcm.pulse { type pulse }
 ctl.pulse { type pulse }
dmi.bios.date: 12/24/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 303
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: M51Sn
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr303:bd12/24/2007:svnASUSTeKComputerInc.:pnM51Sn:pvr1.0:rvnASUSTeKComputerInc.:rnM51Sn:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: M51Sn
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.

** Affects: xorg (Ubuntu)
     Importance: Medium
         Status: New


** Tags: apport-bug bios-outdated-306 i386 needs-upstream-testing precise 
regression-potential running-unity staging
-- 
pae kernel corrupts nvidia driver
https://bugs.launchpad.net/bugs/1079848
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