I did it. You knew I would eventually. Ubuntu is now installed on my CR-48. Bluetooth works, wifi works, touchpad works but not the multi-touch way that it worked under chromeOS and scroll doesn’t work either. In all it runs quite well considering. There is a problem with space on the SSD. Ubuntu is installed in a 6Gb partition and that doesn’t leave much room for music and pics etc. Much more useful now than the default ChromeOS.