I seem to have a problem similar to many but I didn't manage to get it solved:

• have a Lenovo N581 with an NVIDIA GeForce 610M
• have just installed a fresh Ubuntu 12.10 64 bits, + KDE
• and am trying to have my NVIDIA card work.

Have tried all workarounds posted: purge nvidia, install kernel source/headers and then reinstall nvidia-current-updates (or just nvidia-current), do "sudo nvidia-xconfig".

It does create a xorg.conf but does not much (no Module Section by the way). The result is that my system (jokey) tells me that the driver is there but not in use and I only get a 640x480 resolution. If I try to launch nvidia-settings it does indeed tell me that the nvidia driver is not used.

I do all this under kde but I guess it does matter at this stage.

Any hint of how to resolve this? I feel stuck and cannot use any of the acceleration which is partly why I got that laptop in the first place...

thanks for any help/advise you may provide!