This is a general question about the changes that occurs in the development of Ubuntu. I want to know if Ubuntu, let's say 12.04, is working fine on my laptop. Why when I upgrade it to a newer version 12.10, sometimes it will not work?
For example, a black screen, boot hang ups, etc. Isn't 12.10 an exact copy of 12.04 but with added support to some new hardwares and new cool stuff like amazon lens?