package fglrx 2:8.723.1-0ubuntu3 failed to install/upgrade: subprocess installed post-removal script returned error exit status 2

[Richard J. Turner]

Having upgraded to Lucid from Karmic I went to uninstall the ATI driver and got this error.

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: fglrx 2:8.723.1-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic-pae 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic-pae i686
NonfreeKernelModules: fglrx
AptOrdering:
 xorg-driver-fglrx: Remove
 fglrx-kernel-source: Remove
 fglrx-amdcccle: Remove
 fglrx: Remove
Architecture: i386
Date: Wed Apr 28 09:53:30 2010
DkmsStatus:

ErrorMessage: subprocess installed post-removal script returned error exit status 2
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: Hewlett-Packard HP ProBook 4710s
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic-pae root=UUID=85d28fc8-bdbe-4483-988b-789199230b6b ro quiet splash
SourcePackage: fglrx-installer
Title: package fglrx 2:8.723.1-0ubuntu3 failed to install/upgrade: subprocess installed post-removal script returned error exit status 2
dmi.bios.date: 12/30/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PZI Ver. F.14
dmi.board.name: 3074
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 24.0E
dmi.chassis.asset.tag: CNU0061B4N
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PZIVer.F.14:bd12/30/2009:svnHewlett-Packard:pnHPProBook4710s:pvrF.14:rvnHewlett-Packard:rn3074:rvrKBCVersion24.0E:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 4710s
dmi.product.version: F.14
dmi.sys.vendor: Hewlett-Packard
glxinfo:
 Error: couldn't find RGB GLX visual or fbconfig
 name of display: :0.0
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-21-generic-pae

[Stephen Monteith (stephen-monteith)]

This is the workaround that I did:

Press ALT-F2 and enter: gksu gedit /var/lib/dpkg/diversions

Then I removed the following three lines (they are all together):
/usr/lib/libGL.so.1.2
/usr/lib/fglrx/libGL.so.1.2.xlibmesa
xorg-driver-fglrx

Save and remove fglrx driver again.