I have my Mac mini connected to two monitors via USB-C cables. Regardless of the settings under Lock Screen, after I lock the computer, 30 seconds later the displays turn off and (I guess) the Mac goes to sleep. Is this a bug or am I missing something?
Mac mini, macOS 14.0
Hello, I have had a similar issue with my Mac Air with M2 chip when connecting to a Samsung external monitor. It turns out that it was the USB-C adapter that I was using. The adapter was an Apple branded device with a USB-C, HDMI and USB port.
I had tried everything in this thread, a different HDMI cable, a different monitor and finally I noticed the adapter was warm to the touch and purchased a different branded adapter and the problem was solved. I was also on the phone with apple support for an hour and one of the suggestions was doing a factory reset to the machine, which I did not want to do.
Hello, I have had a similar issue with my Mac Air with M2 chip when connecting to a Samsung external monitor. It turns out that it was the USB-C adapter that I was using. The adapter was an Apple branded device with a USB-C, HDMI and USB port.
I had tried everything in this thread, a different HDMI cable, a different monitor and finally I noticed the adapter was warm to the touch and purchased a different branded adapter and the problem was solved. I was also on the phone with apple support for an hour and one of the suggestions was doing a factory reset to the machine, which I did not want to do.
Hi, Thanks for the advice.
So, by pressing Ctrl+Cmd+Q to lock screen, the laptop will turn all displays off after 30 seconds, no matter what the setting are.
me too! the settings are all right, however screen goes black on Lock Screen pretty much immediately. I kinda just want to see the screen saver for a bit first. did you all get any fixes?
I have the same exact issue. Does not matter what any of the settings are set to, as soon as I lock the screen, it almost immediately turns off/blacks out the built in display and my external monitor. It makes no sense, why even have these settings? Its a minor annoyance but when very frustrating on a brand new, very expensive laptop.
Have you tried resetting the SMC in Terminal?
"sudo pmset restoredefaults"
Without the quotes and key in the admin password which you won't see being typed.
Restore default power management settings - Apple Community
Or Desktop computer
If your Mac isn't a laptop computer, follow these steps:
Hi, I was having a similar issue but it would turn off after 9min, no matter what I did. I finally bought another non-apple adapter, which has worked flawlessly since then. That was the last thing left to try. Best of luck.
Actually yes. But no problem to repeat:
Please note that my machine is a Mac mini with SSD, not a laptop with hard disk and I am running MacOS Sonoma, so there are certain settings shown in your linked discussion that I do not have.
UPDATE: Now (a few MacOS updates later - version 14.3 currently) I have these settings, and everything works fine. The screensaver kicks in after 3 mins, the displays go off after 10, and when waking it up all windows are exactly as they were.
Thanks again. I've tried many different settings in the Lock Screen menu, but the problem refuses to go away. And no, the external screens have no sleep timers of their own. I can't be 100% sure, but I do not remember this problem before upgrading to Sonoma. Will report it to Apple as a possible bug.
Thanks for your kind input. You are right about the truncating, I intentionally omitted the other two options as irrelevant for this discussion. Other two options and not other four as in your linked screenshot, since I do not have the power nap and hard disk options which are not available/relevant for my machine.
For the sake of good order I did try switching the Wake off and it did not fix the problem.
tonight I updated the latest sonoma version and I am also experiencing the same issue in my Mac mini. I have set the display turn off setting for 2 hrs but after 30 sec it is getting turn off on Lock Screen. it is very weird and it's a bug. @appplesupport kindly check and fix it.
I just found a temporary solution for my problem (apps shuffled after display off). Just set the screen saver to 1 minute; set "required password after screen saver starts" to immediately.
When I want to leave my desk, just don't touch the mouse or keyboard until the screen saver starts.
😅
Yeah, I won't have this problem if there are no external displays. i guess this app shuffling issue is considered edge case.
So, to avoid the app shuffling, I just need to prevent the laptop to fall into sleep (at least during my work hours).
But by doing Lock Screen, the laptop will fall into sleep after 30 seconds, so I cannot just Lock Screen by pressing Ctrl+Cmd+Q
My compromise is to set: "Start screen Saver when inactive" to 1 minute; set "turn display off on power adapter when inactive" to 2 hours; set "require password after screen saver begins or display is turned off" to immediately; enable "prevent automatic sleeping on power adapter when the display is off" (not sure why this one is not preventing sleeping already?!).
Then i just let my laptop be idle for 1 minute before i leave my desk. Doing so, the screen saver is running and screen is locked by itself, and it will not sleep until after 2 hours. I usually get back from my coffee run by then.
So ... 🥴
Sounds like you have missed something in Lock Screen and/or Displays.
see > Set sleep and wake settings for your Mac - Apple Support
Jerry_D wrote:
Thanks again. I've tried many different settings in the Lock Screen menu, but the problem refuses to go away. And no, the external screens have no sleep timers of their own. I can't be 100% sure, but I do not remember this problem before upgrading to Sonoma. Will report it to Apple as a possible bug.
That is a good idea.
You can send Feedback directly to Apple,
by using > Feedback - macOS - Apple
and > Feedback - Mac mini - Apple
Or by contacting Apple Support,
Display keeps turning off after 30 seconds no matter what the settings say.
