MacMini 2018 – How to Fix Slow Wake After Sleep

mojavesleep-wake

I have Mac mini 2018 with Mojave 10.14.3 and external display LG 27UK600 connected via hdmi 2.0 cable. When i put my mac to sleep, then wake it after 5 minutes, it takes like 60 seconds to wake it up. When i press any key on the keyboard monitor is kinda wakes up, but then goes black again, only after this it actually wakes up, but mac itself is awaken very quick.

What might be a culprit here?

Best Answer

The problem was on MM's hdmi port, i switched to usb-c > DP and no more issues. Though it takes like 5 seconds to show up the picture, but it's acceptable, it's not 60 seconds.

I have no idea if Apple gonna fix this soon. But i have no purpose to use HDMI at all.

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MacOS – Mac Mini won’t wake after sleep with Mountain Lion

Try resetting the NVRAM / PRAM as noted About NVRAM and PRAM

Resetting NVRAM / PRAM

Shut down your Mac.

Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.

Turn on the computer.

Press and hold the Command-Option-P-R keys before the gray screen appears. Hold the keys down until the computer restarts and you hear the startup sound for the second time.

Release the keys.

See if the sleep problem still occurs, if it does try resetting the SMC as noted Intel-based Macs: Resetting the System Management Controller (SMC).

Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve

Shut down the computer.

Unplug the computer's power cord.

Wait fifteen seconds.

Attach the computer's power cord.

Wait five seconds, then press the power button to turn on the computer.

If the problem still persists and you are running OS X Mountain Lion version 10.8.2, there may be a sleep bug that is effecting the reliability of sleep on a lot of Macs as discussed Problem with waking from sleep with 10.8.2

My Mac Pro (early 2009 2.66 GHz Quad-Core Intel Xeon) won't wake from deep sleep after installing OS X 10.8.2 . I have the default setting set for sleep. The only way to "wake" the machine is to hold the power button down to shut down and then restart. I've reset NVRAM (pram) and tried removing power cable. Nothing helps.

Since your Mac Mini is very new I would also consider contacting Apple Support and see what they offer as a solution and at the least notify them of the issue, I am sure they are working on a fix probably scheduled to be included with the next OS X update.

MacOS – Mac wakes up from sleep every two hours on Mac OS X Yosemite

Since com.apple.mDNSResponder.plist got replaced by com.apple.discoveryd.plist after Yosemite Beta, there is another solution for your Problem.

All you have to do is to run following command in your terminal:

sudo /usr/libexec/PlistBuddy -c "Add :ProgramArguments: string --no-multicast" \ 
         /System/Library/LaunchDaemons/com.apple.discoveryd.plist

And reboot your system and it should be gone.

Like also described here: http://ispire.me/fix-yosemite-rtc-alarm-wakeup-issue/

You just have to know that services relying on multicast might not work properly anymore after this change.

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MacOS – Mac Mini won’t wake after sleep with Mountain Lion

MacOS – Mac wakes up from sleep every two hours on Mac OS X Yosemite

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