Hello guys.
I installed bumblebee across "ultimate guide" and when i try run "optirun program" i got this error:
[60.994440] [ERROR] Cannot access secondary GPU - error: Could not load GPU driver.
[60.994465] [ ERROR] Aborting becouse fallback start is disable.

in bumblebee.conf
Driver=nvidia
and
KernelDriver=nvidia


Someone can help me?
Thx !