Generally seconded. I too installed chrubuntu on the samsung exynos, and I never did get the mouse to behave. (That was six months ago and the process may have evolved to something better by now but I have no recent direct experience.)
But I reverted it to its stock os and I’m happy with the purchase. I bought it for my 7th grade daughter (the chrubuntu install was just an experiment), and it’s perfect for her, both in capabilities and in that I won’t have to agonize financially if/when she comes home one day with it having been crushed in the locker room somehow.
