I installed Ubuntu 13.04 into a partition on the hard drive on my MacBook Pro 15'' with Retina Display. I used this tutorial to install it. I then ran apt-get update and upgrade. After that I purged the nvidia packages and installed nvidia-current because I had problems with virtual versions of 13.04 and I thought it might help. Now when i boot up my Ubuntu partition it displays some white text before going to a black screen. Holding shift or pressing alt-ctrl-F1 does nothing. Is there any way to get into it to fix it? If not when I reinstall it how should I do it so this doesn't happen again? If you don't know is there a way I can save the state of my os before I run upgrade so I don't have to keep reinstalling it every time I try something? Thank you.
Dont use nvidia current as you are on a Hybrid system with iGPU + dGPU you need to install the following:
sudo apt-get install nvidia-319 nvidia-settings-319 nvidia-prime
The nvidia-prime is what bumblebee used to be and it's called nvidia optimus.
Hope you get your problem fixed.