On: NoTunes is a macOS application that will prevent A...

[projektfu]

A quick review shows that Apple doesn't mind lots of questions if they don't bother answering them.

How to keep a Mac Mini from going to deep sleep so it can be used as a little server? Answer: install Linux.

[jeffhuys → projektfu]

Or one of the dozen “prevent deep sleep” apps…

[RunSet → projektfu]

To keep a McBook from falling asleep when you close the lid, you need to buy and use a dummy HDMI connector that makes it believe it is connected to an external display.

[stevenhuang → RunSet]

There's the built-in command line tool to prevent sleep, run "caffeinate -d"

[projektfu → stevenhuang]

It's funny how everyone acts like this stuff works, but then I try to log in and it's asleep. If it were easy, there wouldn't be a thousand ways to do it that are all incapable, it would just be a setting.

[stevenhuang → projektfu]

Are you leaving it running? If it works for everyone but you you're probably doing something wrong.