Je cite de la FAQ du README.txt de NVIDIA:
Q: The kernel module does not get loaded dynamically when X starts;
I always have to do 'modprobe nvidia' first. What is wrong?
A: Make sure the line "alias char-major-195 nvidia" appears in your module configuration file, generally one of "/etc/conf.modules", "/etc/modules.conf" or "/etc/modutils/alias". With 2.6 kernels, this file is normally /etc/modprobe.conf. The correct way to update this file is distribution dependant, and it is often not a good idea to edit this file directly. Please consult the documentation that came with your distribution for details.
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Ajoute la ligne "alias char-major-195 nvidia" dans un des fichiers /etc/conf.modules", "/etc/modules.conf" ou "/etc/modutils/alias". Avec des noyaux 2.6 c'est le fichier /etc/modprobe.conf.
Apres tu fais "depmod -a" pour actualiser la config des modules.