I don't know if its a installer error but when I installed Ubuntu 12.04.3 on my i7 laptop with nvidia GT630M card, I found on booting that nvidia driver 319.49 and nvidia-prime package already installed. The system runs quite good and the temperature of power consumption is not that drastically high as I expected from a system where the nvidia card is always on. I guess Optimus is working well. Also the performance is far better than with Bumblebee via optimus run.
I don't know if its a installer error but when I installed Ubuntu 12.04.3 on my i7 laptop with nvidia GT630M card, I found on booting that nvidia driver 319.49 and nvidia-prime package already installed. The system runs quite good and the temperature of power consumption is not that drastically high as I expected from a system where the nvidia card is always on. I guess Optimus is working well. Also the performance is far better than with Bumblebee via optimus run.