You are not the only one. I have switched from Ubuntu 15.10 to Mint on my main computer soon after I've heard that Canonical will not support AMD hardware (I need OpenCL capability). But I have installed Ubuntu 16.04 on my older laptop and had unprecedented amount of crashes, X fucking off and shutting down, and a whole lot of other problems. I probably got more problems in a week than for the previous six months on a version that was supposed to be this buggy and unstable release-candidate-like step. Now I have Debian installed on the other laptop instead of Ubuntu. Unsurprisingly, it woks fine. As someone who was having an Ubuntu system on at least one computer for past six years or so: I never had such a poor experience with LTS or even unstable versions.