nVidia widescreen no longer working.

[Simon]

I hope there is someone here who can help with this annoying issue.

For whatever reason, when I booted into Ubuntu Gutsy this morning my 
graphics driver and sound driver were no longer recognised.  I hadn't 
performed an update, although this is now irrelevant.  I was forced to 
enter into a 'low resolution'  mode of 640x800.  I updated my kernel 
headers via synaptic which allowed the audio to function again and the 
nVidia driver (restricted drivers) to load.  However, now I can no 
longer enable widescreen resolutions.

If I enter System -> Administration -> Screens and Graphics and select 
the 'Widescreen' option I just receive a message saying 'All Users Must 
Log Off For The Changes To Take Effect'.  If I do log off then I just 
get a 640x800 resolution again.

I'll paste my xorg.conf file below in the hope that someone can 
recommend some changes.  Also, what's with all of the xorg.conf files?  
I've never had so many before!  I've got xorg.conf through to 
xorg.conf.18 a xorg.conf.backup and a few xorg.conf.failsafe files.  
Below is just xorg.conf.

By the way, my notebook is a Compaq Presario V3118AU.  The screen 
resolution is (should be) 1280x800.  The product specs can be seen on 
HP's website -> 
http://h10025.www1.hp.com/ewfrf/wc/product?lc=en&cc=au&dlc=en&product=3252144&lang=en&

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister at builder26)  Wed Sep 12 
14:29:17 PDT 2007

# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by failsafeDexconf, using
# values from the debconf database and some overrides to use vesa mode.
#
# You should use dexconf or another such tool for creating a "real" 
xorg.conf
# For example:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"
    Identifier    "Default Layout"
  screen 0 "Default Screen" 0 0
    Inputdevice    "Generic Keyboard"
    Inputdevice    "Configured Mouse"
    Inputdevice    "Synaptics Touchpad"
EndSection

Section "Files"
EndSection

Section "Module"
    Load        "glx"
    Load        "v4l"
EndSection

Section "InputDevice"
    Identifier    "Generic Keyboard"
    Driver        "kbd"
    Option        "CoreKeyboard"
    Option        "XkbRules"    "xorg"
    Option        "XkbModel"    "pc105"
    Option        "XkbLayout"    "us"
EndSection

Section "InputDevice"
    Identifier    "Configured Mouse"
    Driver        "mouse"
    Option        "CorePointer"
    Option        "Device"    "/dev/input/mice"
    Option        "Protocol"    "ImPS/2"
    Option        "ZAxisMapping"    "4 5"
    Option        "Emulate3Buttons"    "true"
EndSection

Section "InputDevice"
    Identifier    "Synaptics Touchpad"
    Driver        "synaptics"
    Option        "SendCoreEvents"    "true"
    Option        "Device"    "/dev/psaux"
    Option        "Protocol"    "auto-dev"
    Option        "HorizScrollDelta"    "0"
EndSection

Section "Monitor"
    Identifier    "Failsafe Monitor"
    Vendorname    "Generic LCD Display"
    Modelname    "LCD Panel 1024x768"
    Horizsync    31.5-48.0
    Vertrefresh    56.0 - 65.0
  modeline  "800x600 at 56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
  modeline  "800x600 at 60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
  modeline  "1280x768 at 60" 80.14 1280 1344 1480 1680 768 769 772 795 
-hsync +vsync
  modeline  "1280x720 at 60" 74.48 1280 1336 1472 1664 720 721 724 746 
-hsync +vsync
    Gamma    1.0
EndSection

Section "Monitor"
    Identifier    "monitor1"
    Vendorname    "Plug 'n' Play"
    Modelname    "Plug 'n' Play"
  modeline  "640x480 at 60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
    Gamma    1.0
EndSection

Section "Device"
    Identifier    "Failsafe Device"
    Boardname    "vesa"
    Busid        "PCI:0:5:0"
    Driver        "nvidia"
    Screen    0
EndSection

Section "Device"
    Identifier    "device1"
    Boardname    "vesa"
    Busid        "PCI:0:5:0"
    Driver        "nvidia"
    Screen    1
EndSection

Section "Screen"
    Identifier    "Default Screen"
    Device        "Failsafe Device"
    Monitor        "Failsafe Monitor"
    Defaultdepth    24
    Option        "NoLogo"    "True"
    SubSection "Display"
        Depth    24
        Virtual    1280    768
        Modes        "1280x720 at 60"    "1280x768 at 60"    "800x600 at 60"    
"800x600 at 56"
    EndSubSection
EndSection

Section "Screen"
   
    #
    Identifier    "screen1"
    Device        "device1"
    Monitor        "monitor1"
    Defaultdepth    24
    SubSection "Display"
        Depth    24
        Modes        "640x480 at 60"
    EndSubSection
EndSection

Section "ServerFlags"
EndSection