I just migrated from Mac Mini M1 to M4 and copied all my settings from my previous Mac.
When i'm inactive, the screen does not shut down anymore. I need to manually turn off my external monitor which is really annoying.
Here are my settings.
Does anyone have an idea on where to look?
Thank you
Mac mini, macOS 14.5
Thanks a lot for the reply!
1) Yes, I found Chrome to be in there which is surprising… Along with other stuff:
2) It shuts down the screen for like 2 seconds and then i turns back on, on login screen
3) See logs attached
1) What external monitor and how is it connected to the M4 Mac mini...?
2) What keyboard, mouse, other USB devices are connected to the M4 Mac mini...?
Those settings look OK, except that I would set "Turn display off....." to 5 or 10 minutes instead of 1 minute.
Input from keyboards, mice and other USB devices can cause activity that will prevent the display from turning off.
1) Samsung Viewfinity S9 plugged in by USB C
2) Logitech Mx Master 3s and Logitech Mx Keys by Bluetooth
I had the exact same setup for my Mac Mini M1 which went to sleep without any issue.
I would also put longer than 1mn but it was to test new settings, and it does nothing anyway ...
1) Go to the Activity Monitor > control click on the tool bar > check Preventing Sleep and look for a process that is preventing sleep.
2) Set up a Hot Corner to Sleep Display and test to see if it works. If that works, then use it as a work- around and/or for further testing.
3) Go to Apple > System Settings > General > System Report.. > Logs > check over the Power Management logs.
You're welcome.
There are two levels, Display Sleep/Off and Full Computer Sleep mode.
While active App's like Chrome, Audio and others prevent Automatic Computer Sleep, they should not prevent the display from turning off.
The display turning back on after 2 seconds is caused by keyboard, mouse or some other USB activity.
Mac Mini m4 won't turn off screen when inactive
