If you want to install ubuntu in Macbook pro. plese refer the following webpage
be attention that, if you want to have the right resolution, download the driver from the nvidia offical site and don’t use the nvidia-current in apt-get, it will crash the GUI.
if you have installed nvidia-current and cannnot enter the GUI, just delete /etc/X11/xorg.conf and then type startx in the command window. then you will enter a GUI with low resolution interface. Then download the nvidia driver from official site and reinstall again.