Stop doing things that keep the screen on and prevent system sleep
When the 5.0 update installed on my systems, it started playing a video. This caused a power request that not only prevented sleep, it prevented the screen saver from engaging. This is a waste of electricity, people! Don't do that! Preventing system sleep should only be done for CRITICAL system functions, not because you want to show me a video about how great the new version of a program is.