A while back I went abroad and got to enjoy an internet without the Great Firewall. Then I came home and my laptop started crashing like it had caught a virus. First the DNS service wouldn’t start, then the network died, and finally the kernel panicked. After a whole lot of fiddling I got it barely running, but it felt like the system was on life support. So I decided to reinstall. Reinstalling is not a simple matter for me, because I run Ubuntu Unity, and Ubuntu has abandoned Unity. There’s no derivative left either — someone did maintain an Ubuntu Unity image, but that maintainer got cancer, and coding from a wheelchair every day is no joke. In the end I had to rely on myself and install a “clean” Ubuntu Unity 18.04.2 step by step.