System boot fail after upgrade to xserver-xorg-core (2:1.7.6-2ubuntu7.5)

[sabby]

Binary package hint: xserver-xorg-core

After applying the update above on ubuntu 10.04 with fglrx driver the system fails to boot. Downgrading to previous version does not fix the problem. I tried different version of ATI driver same result. However, doing the upgrade and reinstalling the flgrx driver in shell mode fix the problem. It must be that some post installation step are missing to generate the new module for flgrx. Thanks.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-core 2:1.7.6-2ubuntu7.5 [modified: usr/lib/xorg/modules/extensions/libglx.so]
ProcVersionSignature: Ubuntu 2.6.32-27.49-generic 2.6.32.26+drm33.12
Uname: Linux 2.6.32-27-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Sun Jan 23 10:47:40 2011
DkmsStatus: Error: [Errno 2] No such file or directory
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: System manufacturer System Product Name
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-27-generic root=UUID=4bfbf21a-ad09-4ecd-a92c-f44938906547 ro quiet splash
ProcEnviron:
 LANG=en_CA.utf8
 SHELL=/bin/bash
SourcePackage: xorg-server
XorgLogOld:

dmi.bios.date: 06/23/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2202
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5Q SE PLUS
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2202:bd06/23/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5QSEPLUS:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: lucid
 architecture: x86_64
 kernel: 2.6.32-27-generic