can't load nvidia kernel module

[David Roguin <nesdavid@gmail.com>]

Hi,

I have this problem, nouveau it's getting loaded at the beginning of
the boot sequence, and then when X tries to load the nvidia module it
crashes saying the graphic card is already being used. If I manually
remove the nouveau module and modprobe nvidia, everything works fine.

I've tried removing the xorg.conf and let X to take care but
gnome-shell doesn't load with the nouveau driver, i guess nouveau
can't really make use of the nvidia card I have.

Anyone knows how can I prevent nouveau from being loaded? I've already
removed libdrm-nouveau1a and the xserver-xorg-video-nouveau

Thanks in advance.
-- 
David