Hi Everyone.
I have recently noticed that my M1 Mac mini no longer goes to sleep. Neither automatically or if I select Sleep in the Apple Menu. I have recently updated to Ventura 13.2.1 but it was happening before this. The new System Settings app seems a bit unintuitive regarding sleep settings but I haven’t changed anything.
I would be grateful for any suggestions.
Richard
Hate to state the obvious… Tried turning it off an on again? 
What devices do you have connected to it? Tried disconnecting them all and see if it sleeps?
Yes, have done all that. It was all working fine a few weeks ago. Haven’t changed anything.
Have you tried a restart with a safe boot Richard, followed by a normal restart ?
Safe Boot will clear a number of the caches which may be the problem.
That’s a good idea. I’ll give it a go.