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
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: nvidia-graphics-drivers-346 (Ubuntu)
Status: New = Confirmed
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I have the exactly same issue on Ubuntu 15.04
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https://bugs.launchpad.net/bugs/1443036
Title:
Blank screen
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