package fglrx (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 1

[Tushar]

After upgrading from 12.04 to 12.10 Unity stopped woking, no lauch bar, dash nothing, could not move, resize windows, resolution was bad.
Searched on google, followed below steps
sudo sh /usr/share/ati/fglrx-uninstall.sh
sudo apt-get remove --purge fglrx fglRx_* fglrx-amdcccle* fglrx-dev* xorg-driver-fglrx
sudo apt-get remove --purge xserver-xorg-video-ati xserver-xorg-video-radeon
sudo apt-get install xserver-xorg-video-ati
sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core
sudo reboot

Unity woks now, looks much better but got this error now

ProblemType: Package
DistroRelease: Ubuntu 12.10
Package: fglrx (not installed)
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.6.1-0ubuntu3
AptOrdering:
 fglrx: Purge
 fglrx-amdcccle-updates: Purge
 fglrx-updates: Purge
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Wed Oct 24 22:21:08 2012
DistUpgraded: 2012-10-21 13:40:53,485 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 4.1.18, 3.2.0-32-generic, i686: installed
 virtualbox, 4.1.18, 3.5.0-17-generic, i686: installed
DuplicateSignature:
 Purging configuration files for fglrx ...
 update-initramfs: deferring update (trigger activated)
 update-rc.d: /etc/init.d/atieventsd exists during rc.d purge (use -f to force)
 dpkg: error processing fglrx (--purge):
  subprocess installed post-removal script returned error exit status 1
ErrorMessage: subprocess installed post-removal script returned error exit status 1
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RV620 [Mobility Radeon HD 3400 Series] [1002:95c4] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:3600]
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: Hewlett-Packard HP Pavilion dv5 Notebook PC
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=1474bfa1-a555-46ed-8334-19701b9ab05b ro quiet splash vt.handoff=7
SourcePackage: fglrx-installer
Title: package fglrx (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 1
UpgradeStatus: Upgraded to quantal on 2012-10-21 (3 days ago)
dmi.bios.date: 08/19/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.37
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 3600
dmi.board.vendor: Quanta
dmi.board.version: 98.36
dmi.chassis.type: 10
dmi.chassis.vendor: Quanta
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.37:bd08/19/2009:svnHewlett-Packard:pnHPPaviliondv5NotebookPC:pvrRev1:rvnQuanta:rn3600:rvr98.36:cvnQuanta:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv5 Notebook PC
dmi.product.version: Rev 1
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.8.4-0ubuntu3
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
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

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel Letzeisen (dtl131)]

Looks like bug 949641. The following commands should fix you:

sudo /usr/sbin/update-rc.d -f atieventsd remove
sudo dpkg --purge fglrx fglrx-amdccle