$ X -version

X.Org X Server 1.7.7
Release Date: 2010-05-04
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.37-trunk-amd64 x86_64 Debian
Current Operating System: Linux laptop 2.6.32-5-amd64 #1 SMP Tue Jun 14 09:42:28 UTC 2011 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.32-5-amd64 root=UUID=7df45c1d-0810-4b95-8d27-3c72c2622337 ro quiet nomodeset radeon.modeset=0
Build Date: 18 February 2011  08:27:24PM
xorg-server 2:1.7.7-13 (Cyril Brulebois <kibi@debian.org>)
Current version of pixman: 0.16.4
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.

$ cat /var/log/sgfxi/sgfxi.log
=========================================================
START sgfxi LOGGING:
=========================================================
Script started: 2012-02-13-09:33:09
Video Card Information: ATI Technologies Inc Manhattan [Mobility Radeon HD 5000 Series]
Video Card Type: 1002
Video Card Number: 68e0
Xorg Version: 1.7
Installing driver to kernel: 2.6.32-5-amd64
sgfxi script version: 4.17.79
sgfxi start options:
SYSTEM_BASE: debian
SYSTEM_CODENAME: stable
DISTRIB_CODENAME: stable
DISTRIB_ID: debian
DISTRIB_RELEASE:
FG_DISTRIB_CODENAME: squeeze
FG_DISTRIB_ID: Debian
APT_TYPE: aptitude
=========================================================
X is Running: false
Current Runlevel: 2
Connection is live (0=true): 0
=========================================================
INSTALL_TO_KERNEL:
KERNEL_FULL: 2.6.32-5-amd64
KERNEL_BASE: 2.6
KERNEL_NUMBER: 2.6.32
KERNEL_MATH: 32
B_IS_XEN: true
Function: create_x_conf - Primary: Start                                     
  xorg is present with xorg.conf file                                         
Function: create_x_conf - Primary: End
Function: check_package_manager_updated - Utility: Start
  sizeWorking: 15
Function: check_package_manager_updated - Utility: End
Function: check_supported_driver - Utility: Start
Function: check_supported_driver - Utility: End
Function: set_cpu_data - Utility: Start
  BITS: 64 - arch: amd64
Function: set_cpu_data - Utility: End
Function: set_driver_install_version - Primary: Start
Function: check_supported_driver - Utility: Start
  Args: last-check
Function: check_supported_driver - Utility: End
Function: print_information_continue - Utility: Start
  Args: standard The graphics installer will be installing the fglrx driver: 12-1
Function: print_information_continue - Utility: End
  Installing this driver: 12-1
Function: set_driver_install_version - Primary: End
Function: driver_support_tests - Utility: Start
  Args: supported-driver
Function: driver_support_tests - Utility: End
Function: check_kernel_headers - Utility: Start
Function: check_package_status - Utility: Start
  Args: linux-headers-2.6.32-5-amd64 i
  Package Version: 2.6.32-35
Function: check_package_status - Utility: End
Function: check_package_status - Utility: Start
  Args: linux-headers-2.6.32-5-amd64 c
  Package Version: 2.6.32-41
Function: check_package_status - Utility: End
  headerName: linux-headers-2.6.32-5-amd64
headerInstalled: 2.6.32-35
headerAvailable: 2.6.32-41
headerFile:
Function: check_kernel_headers - Utility: End
Function: check_run_package_tools - Primary: Start
Function: check_run_package_tools - Primary: End
Function: set_download_info - Primary: Start
  download url: http://www2.ati.com/drivers/linux/ - driver file: amd-driver-installer-12-1-x86.x86_64
Function: set_download_info - Primary: End
Function: download_extract_driver - Primary: Start
  Args: http://www2.ati.com/drivers/linux/ amd-driver-installer-12-1-x86.x86_64
Function: pre_extract_clean_set_up - Utility: Start
  Args: amd-driver-installer-12-1-x86.x86_64
Function: pre_extract_clean_set_up - Utility: End
Creating directory fglrx-install-12-1
Verifying archive integrity... All good.
Uncompressing AMD Catalyst(TM) Proprietary Driver-8.93.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Function: download_extract_driver - Primary: End
  Function: set_install_directory - set to: /usr/src/sgfxi-downloads/fglrx-install-12-1
Function: run_driver_patches - Primary: Start
Function: run_driver_patches - Primary: End
Function: x_start_stop_master - Primary: Start
  Args: stop
Function: start_stop_x - Utility: Start
  Args: stop
  default runlevel: 2
current runlevel: 2
  dmanCommand: service kdm stop
Function: x_is_running - Utility: Start
  xIsRunning: false
Function: x_is_running - Utility: End
Function: start_stop_x - Utility: End
Function: x_start_stop_master - Primary: End
Function: check_driver_install_tools - Primary: Start
Function: check_package_status - Utility: Start
  Args: module-assistant i
  Package Version: (none)
Function: check_package_status - Utility: End
Function: check_package_status - Utility: Start
  Args: build-essential i
  Package Version: 11.5
Function: check_package_status - Utility: End
Function: check_package_status - Utility: Start
  Args: debhelper i
  Package Version: (none)
Function: check_package_status - Utility: End
Function: check_package_status - Utility: Start
  Args: dpkg-cross i
  Package Version: (none)
Function: check_package_status - Utility: End
Function: remove_package - Utility: Start
  Args: dpkg-cross fglrx
Function: check_package_status - Utility: Start
  Args: dpkg-cross i
  Package Version: (none)
Function: check_package_status - Utility: End
Function: remove_package - Utility: End
Function: check_package_status - Utility: Start
  Args: libstdc++5 i
  Package Version: (none)
Function: check_package_status - Utility: End
Function: check_package_status - Utility: Start
  Args: libstdc++6 i
  Package Version: 4.4.5-8
Function: check_package_status - Utility: End
Function: check_driver_install_tools - Primary: End
Function: prep_install - Primary: Start
Function: install_package - Utility: Start
  Args: libgl1-mesa-glx reinstall
Function: update_package_manager - Utility: Start
  Args: update
  Update aptitude successful
Function: update_package_manager - Utility: End
Function: check_package_status - Utility: Start
  Args: libgl1-mesa-glx i
  Package Version: 7.7.1-5
Function: check_package_status - Utility: End
  Install command for aptitude: reinstall - Extra args:
Function: install_package - Utility: End
Function: prep_install - Primary: End
Function: preinstall_cleanup - Primary: Start
  Pre Remove: nvidia.ko files:

Function: list_installed_packages - Utility: Start
  Args: nvidia (modalias|libvdpau|nvidia-bl-dkms|nvidia-cg-toolkit)
  packageList:
Function: list_installed_packages - Utility: End
  Post Purge/Remove: nvidia.ko files:

Function: remove_module - Primary: Start
  Args: nvidia
  operation outcome: unset
Function: remove_module - Primary: End
Function: list_installed_packages - Utility: Start
  Args: fglrx modalias
  packageList:
Function: list_installed_packages - Utility: End
Function: remove_module - Primary: Start
  Args: fglrx
  operation outcome: removed
Function: remove_module - Primary: End
Function: clean_dkms - Primary: Start
Function: clean_dkms - Primary: End
Function: preinstall_cleanup - Primary: End
Function: run_driver_installer - Primary: Start
  driver: 12-1
  direct fglrx install - no debs: options: 12-1 --install
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Error logs from fglrx install:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
No error logs found from the run package installer!
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  ERROR: (245) The fglrx installer exited with the error: 3
A copy of this driver installer error log is also here: /var/log/sgfxi/sgfxi.log