so far the ChrUbuntu is the only supported Chromebook linux. and the only one which bypasses Google's proprietary BIOS (it uses the dev mode version and boots and replaces ChromeOS entirely). it's based on Ubuntu 12.04 LTS w/ Unity. you can tack on KDE, but like tacking on Nova Launcher on a TouchWiz or Sense ROM in Android, you still have the 'evil leftovers' intact.
Samsung Galaxy Note 3 (rooted, HyperDrive ROM)
Samsung Galaxy Tab 3 7.0 (non-rooted, stock)
Samsung Galaxy Tab 2 10.1 (obsolete, slow, rooted)
Samsung Galaxy Note 10.1 2014 Edition