Samsung Series 5 550 Chromebook - Ubuntu help + ideas

Hey guys,

I was thinking of partitioning my Chromebook and installing Ubuntu on it next to my ChromeOS. I've had difficulty with it, it will go through the process and everything and eventually just show a black screen instead of booting up in Ubuntu (after it "installs").

Any ideas?

Also, I'm curious to do more to my Chromebook in time. Do any of you have any hacks that you have done or know about that would interest a tinkerer like me?