I just bought a dell inspiron 14r 5437-a40 with a hybrid card an Intel card and a Nvidia GT 750M card.
I tried various instructions to make it work, and none of them actually worked.
I follow instruction to make the 750M run all the time but, I had a black screen after login.
And the instructions to install bumblebee, I simply can’t run no app with optirun, it returned with a message like “Cannot access secondary GPU” “No devices detected”.
My question is: If someone out there made the GT 750M work on Linux, please tell us!