Question: I have a dual boot set up on a Lenovo Ideapad Y500 with NVIDIA 750M and I am having problems installing the graphics cards. I have made sure to install both linux-headers-generic and linux-source, and yet have ended up with a black screen whether I install nvidia-current, nvidia-current-updates, nvidia-experimental-310, and nvidia-319. I even tried enabling proprietary drivers through settings and still ended up with a black screen on boot. Is my graphics card just not supported yet, or is there a way to fix this?

Answer: 
Used the GUI to enable proprietary drivers several days ago, and to my surprise it worked. A couple month's worth of updates must have fixed the issue.
pay attention that there are different nvidia-packages !
the general package is not working as good as the special cuda-sdk-package
for cards with optimus-cuda !

here is the solution I have done with my 540M nvidia-card:

<https://askubuntu.com/questions/297030/nvidia-frickle-with-hybrid-chipset-is-now-over-finally>