I want to install Ubuntu 18.04 as the single OS on a MacbookAir3,1. In addition, I'd like to use the proprietary graphics drivers, but there are some known issues with that. I attempted to run the install while booted from USB drive, but the graphics issue seems to be preventing the thumdrive from booting all the way.
The guide I'm following (although for an older version) suggests that the process is much easier when installing from an optical disc than with a thumb drive. Will it work from a DVD with Ubuntu 18.04? Is a specific Kernel version required for best results?
I was able to solve this question by following the steps outlined in the answer to this related question: Proprietary NVidia drivers with EFI on Mac, to prevent overheating
As it says there, essentially what's needed is to "create a GRUB script for setting the PCI-E registers during boot"