I have lenovo y510p with nvidia optimus(one intel hd 4600 and one gtx755m). i have fresh install kubuntu 15.04 and i can't get bumblebee work... Always finish with black screen and formatting the hdd. I use this guide: http://rajat-osgyan.blogspot.com/2015/03/how-to-install-bumblebee-on-ubuntu.html
But command primusrun glxinfo | grep OpenGL always return error. I try it 15+ time, but still can't make it work. Do you have a other good tutorial, how to do it. I use linux from 2 years as my workstation, but in home i'm still on windows and i wanna change that.