I installed Ubuntu on my Lenovo Y410P (Haswell CPU, NVidia GT750M, Windows 8 and UEFI) and after boot the screen just turned off instead of showing Unity. I messed around lot, and with nomodeset could sometimes get a display to come up, but it was the wrong size. I was so confused that I uninstalled, but Windows is dreadful and not able to do everything I do in Ubuntu. The OS I used was stock Ubuntu 13.04, which I would prefer to use, although elementaryOS 0.2 (12.04.2 derivative) is also acceptable. Any ideas? (Sorry for posting this new question but I am so confused and can't find any answers elsewhere. Edit: So now I reinstalled with 12.04.2, on my phone now but will try nomodeset to install when I get home.
Press function and the up arrow key (brightness). I had the same issue on my Y510p and discovered by accident that the screen brightness defaults to off upon boot.
Yo.. I got it to work..
It's the problem with the Nvidia graphics card.
then restart your machine. WALLA!
also, i had mesa installed as well beforehand to get glx to get me what I need.