¿imposible instalar aceleracion grafica en nVidia Corporation NV5M64 [RIVA TNT2 Model 64/Model 64 Pro]?

Hola, llevo todo el dia y parte del de ayer uintentando instalar la aceleracion grafica en la tarjeta nVidia Corporation NV5M64 [RIVA TNT2 Model 64/Model 64 y no hay manera, he probado con los driver de los repositorios, con envy, synaptic, añadir y quitar, automatix, con los driver oficiales,...y nada en el momento en que en el fichero xorg.conf aparece driver nv o driver nvidia en servidor grafico no arranca.Para que arranque el server grafico tengo que poner driver vesa en xorg.conf.Si ibstalo los driver oficiales cuando termina de instalarse me sale el mensaje:

<blockquote>

-> Kernel module compilation complete.
ERROR: Unable to load the kernel module 'nvidia.ko'. This happens most
frequently when this kernel module was built against the wrong or
improperly configured kernel sources, with a version of gcc that differs
from the one used to build the target kernel, or if a driver such as
rivafb/nvidiafb is present and prevents the NVIDIA kernel module from
obtaining ownership of the NVIDIA graphics device(s).

Please see the log entries 'Kernel module load error' and 'Kernel
messages' at the end of the file '/var/log/nvidia-installer.log' for
more information.

</blockquote>

COmo la tarjeta es antigua probe con nvidia-legacy de los repositorios y nada.

Mi xorg.conf esta ahora mismo asi:

<blockquote>

# /etc/X11/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(5) 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 "Files"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
# path to defoma fonts
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "Module"
Load "i2c"
Load "bitmap"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "vbe"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "es"
Option "XkbOptions" "lv3:ralt_switch"
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"
Driver "wacom"
Identifier "stylus"
Option "Device" "/dev/input/wacom"
Option "Type" "stylus"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "InputDevice"
Driver "wacom"
Identifier "eraser"
Option "Device" "/dev/input/wacom"
Option "Type" "eraser"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "InputDevice"
Driver "wacom"
Identifier "cursor"
Option "Device" "/dev/input/wacom"
Option "Type" "cursor"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "Device"
Identifier "nVidia Corporation NV5M64 [RIVA TNT2 Model 64/Model 64 Pro]"
Driver "vesa"
BusID "PCI:1:0:0"
EndSection

Section "Monitor"
Identifier "PHILIPS 107E"
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "nVidia Corporation NV5M64 [RIVA TNT2 Model 64/Model 64 Pro]"
Monitor "PHILIPS 107E"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 4
Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 15
Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480" "640x350"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "stylus" "SendCoreEvents"
InputDevice "cursor" "SendCoreEvents"
InputDevice "eraser" "SendCoreEvents"
EndSection

Section "DRI"
Mode 0666
EndSection

</blockquote>

Utilizo xubuntu y necesito la aceleracion grafica para poder utilizar una tarjeta de tv.¿que puedo hacer para activar la aceleracion grafica?