If you have a new Alienware, I highly recommend not to try installing Ubuntu on it. I can't even describe how many levels of hell I went through to get stuff working, and how every Ubuntu base update gives me a panic attack.
From Ubuntu not installing with RAID settings, then not being able to boot in GUI mode because Nvidia drivers, to built-in keyboard, speaker and mic not working.
Praise the Ubuntu lord, now everything is working, but I still can't adjust the rgb keyboard colors :(