Jon posted a comment on discussion Help

My X1 Yoga has been doing okay since I bought it in December. Sometimes the tablet would forget how to talk to the pen, so I have a script to unload and reload the wacom module, and that would restore it. Annoying, but usable. Recently ubuntu upgraded itself, and now if I touch a pen (either the stock Lenovo pen or my Bamboo), the whole machine instantly freezes. My kern.log doesn't have anything helpful in it other than a page of nulls. I have no idea where to begin, other than to try downgrading...