Reconfiguring X.org video drivers is not possible: /etc/X11/xorg.conf is invalid.

[Rashkae]

Keith Clark wrote:
> I have an ATI Xpress 200 video card and it worked well with the
> restricted drivers under 8.04.1.  I upgraded to 8.10 last night and all
> seemed well but when I reboot it goes into low res mode.
> 
> When I tried to activate the restricted drivers I get the following error:
> 
> Reconfiguring X.org video drivers is not possible: /etc/X11/xorg.conf is
> invalid.
> 
> Here is my xorg.conf file:
> 
> # xorg.conf (xorg X Window System server configuration file)
> #
> # This file was generated by dexconf, the Debian X Configuration tool,
> using
> # values from the debconf database.
> #
> # Edit this file with caution, and see the xorg.conf manual page.
> # (Type "man xorg.conf" at the shell prompt.)
> #
> # This file is automatically updated on xserver-xorg package upgrades
> *only*
> # if it has not been modified since the last upgrade of the xserver-xorg
> # package.
> #
> # If you have edited this file but would like it to be automatically
> updated
> # again, run the following command:
> #   sudo dpkg-reconfigure -phigh xserver-xorg
> 
> Section "Screen"
>    Identifier    "Default Screen"
>    Device        "ATI Technologies Inc RS480 [Radeon Xpress 200G Series]"
>    Monitor        "KDS"
>    SubSection "Display"
>        Modes        "1280x1024"    "1280x960"    "1152x864"   
> "1024x768"    "832x624"    "800x600"    "720x400"    "640x480"
>    EndSubSection
>    Defaultdepth    24
> EndSection
> 
> Section "Device"
>    Identifier    "ATI Technologies Inc RS480 [Radeon Xpress 200G Series]"
>    Driver    "ati"
>    Busid        "PCI:1:5:0"
>    Option        "VideoOverlay"    "on"
>    Option        "OpenGLOverlay"    "off"
> EndSection
> 
> # commented out by update-manager, HAL is now used
> #Section "InputDevice"
> #    Identifier    "Generic Keyboard"
> #    Driver        "kbd"
> #    Option        "CoreKeyboard"
> #    Option        "XkbRules"    "xorg"
> #    Option        "XkbModel"    "pc105"
> #    Option        "XkbLayout"    "us"
> #EndSection
> 
> # commented out by update-manager, HAL is now used
> #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
> 
> # commented out by update-manager, HAL is now used
> #Section "InputDevice"
> #    Driver        "wacom"
> #    Identifier    "stylus"
> #    Option        "Device"    "/dev/input/wacom"
> #    Option        "Type"    "stylus"
> #    Option        "ForceDevice"    "ISDV4"# Tablet PC ONLY
> #EndSection
> 
> # commented out by update-manager, HAL is now used
> #Section "InputDevice"
> #    Driver        "wacom"
> #    Identifier    "eraser"
> #    Option        "Device"    "/dev/input/wacom"
> #    Option        "Type"    "eraser"
> #    Option        "ForceDevice"    "ISDV4"# Tablet PC ONLY
> #EndSection
> 
> # commented out by update-manager, HAL is now used
> #Section "InputDevice"
> #    Driver        "wacom"
> #    Identifier    "cursor"
> #    Option        "Device"    "/dev/input/wacom"
> #    Option        "Type"    "cursor"
> #    Option        "ForceDevice"    "ISDV4"# Tablet PC ONLY
> #EndSection
> 
> Section "ServerLayout"
>    Identifier    "Default Layout"
>  screen "Default Screen"
>    Inputdevice    "Generic Keyboard"
>    Inputdevice    "Configured Mouse"
>    # Uncomment if you have a wacom tablet
>    #    InputDevice     "stylus"    "SendCoreEvents"
>    #    InputDevice     "cursor"    "SendCoreEvents"
>    #    InputDevice     "eraser"    "SendCoreEvents"
> EndSection
> 
> Section "Module"
>    Load        "glx"
> EndSection
> 
> Section "Monitor"
>    Identifier    "KDS"
>    Option        "DPMS"
> EndSection
> 
> Section "Extensions"
>    Option        "Composite"    "Enable"
> EndSection
> 
> Any hints as to how to resolve this issue?
> 
> Thanks,
> 
> Keith
> 

Press ESC key when Grub appears to see the Grub menu. From the menu,
choose rescue mode.  When your system has booted and displays a menu of
options, choose X Fix.

Restart, then use Hardware Drivers (Restricted Driver manager) again to
enable ATI driver.