Oct 20, 2016 Download, install, and launch Ampetamine like you would any other Mac app. When you do, and you’ll see a new icon in the menu bar that looks like a pill. (You can customize this icon, but we’ll get to that in a bit.) Click this icon and you can quickly toggle your Mac to stay awake “Indefinitely.”.
You should try, first, resetting the SMC (System Management Controller). First, shut down your MacBook and plug in your power adapter. Hold down Shift, Control, Option then press the Power Password for external hard drive. key, while continuing to hold down the other keys. If your AC adapter is illuminated orange, you will see it change to green momentarily, then back to orange. It is best to do this when the machine isn't fully charged. Then try restarting the computer normally.
I would also try resetting your NV/PRAM. To do this, hold the Cmd + Option + P + R keys and then power on the machine. It will begin to start then restart. You should hear the machine chime twice. Once it chimes twice, release the keys and allow it to boot. For more info, see: https://support.apple.com/en-us/HT204063
This article is also a good reference: If your Mac doesn't sleep or wake when expected - Apple Support
Feb 2, 2018 12:18 PM
You can use an external display or projector with a Mac notebook while its built-in display is closed. This is known as closed-clamshell or closed-display mode.
Check requirements
To use closed-display mode with your Mac notebook, here's what you need:
Enable closed-display mode
Keep Mac On When Closed
If your external display or projector doesn't turn on after you connect it to your Mac, connect your display while your Mac is asleep or off, then wake or turn on your Mac.
Disconnect your display or projectorApp To Keep Mac Awake When Closed
Before you disconnect your display or projector, put your Mac to sleep.
Choose Apple () menu > Sleep, then disconnect your display or projector. Samsung c480fw scan software mac.
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December 2020
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