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.
Blackscreenn after installing a new nvidia driver: push the key "FN" and "Up". You only have to lighter the screen.