The Chromebook Pixel is a relatively powerful laptop that is perfectly capable of running a normal Linux distribution with a little tweaking. Power users have a couple of options for doing so, the first involves installing a custom BIOS that allows the laptop to boot a normal OS. Most This is the most technical method to get Linux on your Chromebook, but it works with many distributions with little to now tweaking.
The second option is to run Ubuntu inside ChromeOS using a tool called Crouton. In this scenario, separate instances of ChromeOS and Ubuntu run side by side and allow you to switch between them quickly. This is the best option for someone who wants to use ChromOS the majority of the time, but switch to Linux for specific applications that don’t run on it.