I am using a Nvidia GT 630M card (on a Lenovo G580) which probably uses Optimus since the Intel integrated graphics show up.
I am somewhat new to Linux and installed Ubuntu 13.10.
System Settings -> Software & Updates -> Additional Drivers shows me I am not using proprietary drivers and there are no available.
However I did download the 331.20 driver from Nvidia but I am not sure how to install it and if this is the smart way (no packages/updates!?).
What is the correct and easy way to install the proprietary drivers? Can I use the Software Center?
Is Optimus still a big problem? Do not the 331 and 319 drivers have Optimus support for Linux?
If Optimus is a problem:
Is there a way to manually switch between Intel and Nvidia graphics (which would be the easiest way in my opinion)? Is there another way to deal without Bumblebee? How do I enable Nvidia card for Steam Games with Bumblebee?