Whenever I boot up post upgrade to Fedora 22, it takes much longer to load KDM than it used to. So I thought maybe it has something to do with Wayland and the fact that KDM is EOL’d. So I thought I’d convert to SDDM. I had no idea how to change DMs in the modern day, so I decided to look it up and ask on LinuxQuestions.org. Eventually, I found it on a stack overflow page: