Hi guys !

I eventually got it to work as well.
I'm running a Dell Laptop with 64-bits Intel Core i7 2670QM CPU, an Intel i915 GPU and a NVidia Geforce GT525M GPU card as well.
I'm using Kali 2 (with update and upgrade) and I used "bumblebee-nvidia + primus" from the repo and the CUDA 7.0.28
The weird thing is optirun won't work the 1st time I run it, but only the 2nd time and after.
With the GPU core an the 7 CPU cores, PYRIT goes up to 6k PMK/s. Not that bad after all.

If I can be of any help to anyone, please feel free to ask.