This article implies that setting a hot corner to "Put Display to Sleep" can also "put your Mac to sleep".

https://support.apple.com/en-us/HT204760


I want my display to sleep, but I don't want the computer to sleep ever. Is this an undocumented feature of "Put Display to Sleep"? Is there something than can be tweaked? Energy Saver settings are already set to "Prevent computer from sleeping automatically when the display is off" and "Wake for network access".


I'm able to prevent the system from sleeping by constantly pinging my network gateway as a workaround.

Mac mini 2018 or later

Posted on Nov 2, 2020 5:37 PM

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5 replies

Nov 2, 2020 6:50 PM in response to properint

The option works just fine, and has for as long as I've used macOS. It specifically states, "Prevent computer from sleeping...when the display is off." You should enable Power Nap. The other options need not be enabled. Your display will sleep after the set time, but not the computer unless you put the computer to sleep.


Nov 2, 2020 7:15 PM in response to Kappy

I'll try to be more clear. The option isn't working for me.


From the article I'm referencing: "Moving your mouse pointer to a hot corner can put your Mac to sleep, depending on your Mission Control settings." Since there is no Put the Mac to sleep hot corner option, just Put Display to Sleep, that the outcome of the Mac going to sleep is undocumented/undesirable.


My sleep schedule is unchecked.

Turn display off after: is set to Never

Hot corner is set to Put display to sleep.

Prevent computer from sleeping automatically when display is off is Checked

Put hard disks to sleep is Unchecked

Wake for network access is Checked

Start up automatically after power failure is Unchecked.

Enable power nap is Unchecked.


Specifically, my problem is that the Mac will go to sleep after some unspecified time after activating the hot corner to put the DISPLAY to sleep. The article I referenced seems to imply that the Put display to sleep hot corner setting can ALSO put the Mac to sleep. This seems like the wrong behavior.


The only way I have been able to prevent the Mac from going to sleep when activating the Put Display to sleep hot corner is by also having a network ping going on in the background.


I'm not looking for a check box to hit, I'm hoping that there is a sysctl to fix this behavior or something else.


My Mac is definitely going to sleep:

% sysctl kern.sleeptime

kern.sleeptime: { sec = 1604272445, usec = 750243 } Sun Nov 1 17:14:05 2020

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This article implies that setting a hot corner to "Put Display to Sleep" can also "put your Mac to sleep".

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