It was 2011 where this first happened. Millions? of iMacs, Macbooks, MacMinis, MacPros cant sleep anymore. Some of them tried curious apple scripts to get their deserved sleep. But that cant be the solution.
So much pollution, so much energy world wide wasted with this one bug.
In Terminal "pmset -g assertions"
PreventUserIdleSystemSleep named: "com.apple.audio.'AppleHDAEngineOutput:1B,0,1,2:0'.noidlesleep"
In Activity Monitor Spotify is the only app that can prevent sleep.
And no spotify is not playing, its paused.
Please save us!
Updated on 2018-07-22
Hello and thanks for the feedback!
This sounds more like an issue that's worth investigating.
Could you please search for that issue in the respective help section and provide more info about the issue. If it doesn't exist you can create a new topic and let us know about it! Then we can check it out there.