(Guide) Installing Nvidia + Bumblebee + CUDA for Optimus enabled Laptops

[Davide3i]

Can you tell me the exact steps did you do?

Sure.
In the original guide from the OP post I changed the step #9 with:

apt-get install bumblebee-nvidia primus

Then:

nano +22 /etc/bumblebee/bumblebee.conf

Driver=nvidia-current

Finally I jumped steps #13 and #14 and decided to install the last version of CUDA (7.0.xxx), so I kept following the original guide from step #15.

[MrUnruly]

I followed your steps Davide3i but when I run "optirun glxspheres64" I get an error that the GPU cannot be accessed and that I don't have the right driver. Am I missing something?

[MrUnruly]

I followed your steps Davide3i but when I run "optirun glxspheres64" I get an error that the GPU cannot be accessed and that I don't have the right driver. Am I missing something?

The exact errors, for optirun glxspheres64:

[ 294.432628] [ERROR]Cannot access secondary GPU - error: Could not load GPU driver

[ 294.432651] [ERROR]Aborting because fallback start is disabled.

for modinfo nvidia:

modinfo: ERROR: Module nvidia not found.

EDIT:

I edited /etc/bumblebee/bumblebee.conf and changed nvidia-current to nvidia and then optirun glxspheres64 worked but modinfo nvidia still gives me an error but iv managed to install cuda, hashcat and pyrit all working fine.

[Davide3i]

I think that many errors may be caused by different systems' configurations. Still, if CUDA's computation is working, I would not mind to all the "errors" you've encountered.