I've got a Dell inspiron 15 7559 laptop with a nVidia GM107M [GeForce GTX 960M] graphical card. After getting it to boot correctly and installing the nvidia drivers using the additional drivers tab (nvidia-352) I was able to boot perfectly normal.
When I switched to the intel card using
prime-select intel and logged out I couldn't log back in. I was able to use a virtual console to revert back to nvidia and log back in. So I thought perhaps it needs a reboot for the changes. After the reboot I booted into a frozen virtual console. I had to go to recovery mode and execute
prime-select nvidia in a console to be able to boot normally again.
My guess is that something with the intel drivers is broken and crashes xorg.
I've also tried bumblebee with the same results. It booted into a frozen VC and only worked after everything was run using Nvidia again.
Anyone got any suggestions??
edit: I think gpu-manager is writing using the nvidia driver. I am currently trying to find a way to get gpu-manager to work correctly.