Some display settings are stored in NVRAM and resetting this may resolve your issue. See also: Can’t Adjust The Sound Volume Level?ģ-If you are still having issues, try resetting NVRAM or PRAM. Pid 157(coreaudiod): 00:00:12 PreventUserIdleSystemSleep named: “:1B,0,1,1:0.context.preventuseridlesleep” Pid 12558(iTunes): 00:00:12 PreventUserIdleSystemSleep named: “” The results will also give more details, as you can see below: Check under the “Listed by owning process” line. As you can see PreventUserIdleSystemSleep has 1 thus it is enabled. Try to find items with a “1” next to them. And enter the following command and hit enter:.Launch the Terminal app (Applications > Utilities).As long as this app is open, the Mac will not go to sleep automatically.Ģ-You can also use the Terminal app to determine the cause of sleep prevention. As you can see below, iTunes is keeping the Mac wake, meaning it is interrupting Mac sleep mode. This column indicates what processes prevent your Mac from going to sleep. There are five or six column and and one of them is called “Preventing Sleep”.First launch the Activity Monitor app (Applications > Utilities) or you can open Spotlight ( Spotlight not working?) and search for it.For example, several users have said that their printers (e.g., pending print jobs) cause this. Some internal activities may keep your Mac wake. You can check this by going to System Preferences > Energy Saver.ġ-First let’s try to figure out what is preventing your Mac from going to sleep. It is important that your Energy Saver settings is set up the way you want. Are you having problems where macOS won’t go into sleep mode when expected? This article explains how you can troubleshoot it. ![]() You can change your computer’s sleep settings by going to System Preferences > Energy Saver, so that you can tell your Mac how long to wait before it goes to sleep. You can also put your Mac to sleep when you choose Apple Menu > Sleep. ![]() Your Mac will go to sleep after a specified duration of inactivity, automatically.
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