Comment 3 for bug 1443036

i solved using this instruction which can be found here: https://wiki.ubuntu.com/Bumblebee#Installation

Setup for 14.04 and later
You need to open your terminal and enter the commands below.

Enable the Universe and Multiverse repositories in order to allow the bumblebee and nvidia packages to be installed:

sudo apt-get install bumblebee bumblebee-nvidia primus linux-headers-generic
Reboot.

Later I've installated nvidia-346 package!