My transition from Fedora 21 to 22 on the ThinkPad X1 Carbon was fairly uneventful even with over 2,400 packages involved in the upgrade. The only problem I dealt with on reboot was that my icons on the GNOME 3 desktop were way too large. That’s a pretty easy problem to fix. However, something else cropped up after a while. I started listening to music in Chrome and a Pidgin notification sound came through.