I have a Nvidia Optimus Laptop with Ubuntu 11.10 and previous i used to blacklist nouveau (by "sudo gedit /etc/modprobe.d/blacklist.conf" and adding "blacklist nouveau" then executing "sudo update-initramfs -u") so the built in Intel graphic was used, it work with Unity 3D.
Now i have installed Ubuntu 12.04 64bit tried to blacklist nouveau nvidia nvidiafb nv and updating ramfs but lsmod still showes that the nvidia module was loaded.
How do i prevent this ?