CUDA programming with Optimus driver install allowing to use CUDA while displaying on Intel

Hi,

I need to use an Optimus laptop (Asus i5) for demos on CUDA under Linux*. I understand that it is not
possible to use the current CUDA 256.x driver for X11 displaying, but I had read that it would
be possible to use this driver to support CUDA computations.

Is it true, and is there some guide explaining how to proceed ? I had a lot of experience with
black screens trying to use the devdriver… Probably this guide will interest much programmers.

Regards,

asus n61j, nvidia 325M, ubuntu 10.4
cuda 3.1