This has suddenly happened to me also, on the mac in my signature. I've had sreensaver set to ten minutes, and display sleep set to one hour. Computer is set to never sleep. I've had it like this for many years, over many versions of macOS, and many different Intel/ARM mac models.
Suddenly it's not working. Screensaver just runs and runs. I have not changed anything lately; not macOS v., not installed or upgraded any software, all connected peripherals are the same.
Did you find any solution to this?
I never use wifi, only ethernet. Fiddling with the settings seemed to fix it. Not really a bug, I think.Yes: Turning off wifi fixes it for me.
It's some bug in the OS. I haven't downloaded the latest Sonoma to see if its fixed yet.....
Added: I wonder if TV app being fullscreen in its own space has something to do with it, like having a browser streaming fullscreen video stops screensaver and screen-off from kicking in.
I wrote:Try Ohanaware's Sleep Aid - it should give you some ideas for culprits.
What did you not understand?I'm pretty sure I've found the culprit. The TV app.
I wrote:
What did you not understand?