Comment 36 for bug 626974

Maybe this helps someone.
Its from OMG website.
Thnx to "saurabhneo23"
http://www.omgubuntu.co.uk/2010/10/nvidia-96-driver-ubuntu-10-10-fix/#comment-86227499

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"If you can't fix it then downgrade it " :D

Well those who couldn't get their Nvidia drivers working with Ubuntu 10.10 due to newer version of Xorg-Xserver try to do the following : (it worked for me ;))

1) Remove any form of Nvidia drivers , configuration files and anything related to it. I dropped to vesa drivers but that is not necessary.
1) Backup /etc/apt/sources.lst and change all instances of "maverick" for "lucid"
2) In Synaptic, remove xserver-xorg
3) Reload/update the sources and install xorg
4) Install the Nvidia driver which you know worked with Lucid. In my case it is 195.36.24
5) change the sources.lst back to maverick
6) Reconfigure the xserver: sudo dpkg-reconfigure xserver-xorg
7 ) Now run these commands one after the another :
-- sudo update-alternatives --config gl_conf
-- sudo ldconfig
-- sudo update-initramfs -u
-- sudo nvidia-xconfig
8) Now using synaptic lock the version of these downgraded packages (xorg, nvidia-current, etc ) so that they don't get upgraded automatically
9) Restart.