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- Keep Mac On While Closed
- App To Keep Mac From Sleeping
- App To Keep Mac Awake When Closed
- Keep Mac On When Closed
Feb 04, 2016 While you should never operate your Mac for extended periods of time with the lid closed, there are ways to bypass this behavior and allow your device to keep on going. For this guide, we will be focusing on an app called InsomniaX. Stop Mac From Going into Sleep Mode. By default, all Mac computers automatically go into sleep mode after a certain period of inactivity. This feature on Mac is designed to save power and also to prevent unauthorized access, while you are away from your Mac. Usually the period of inactivity after which the Mac automatically goes into sleep mode.
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 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
Keep Mac On While Closed
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:
App To Keep Mac From Sleeping
- An AC power adapter or an external display that provides power over USB-C or Thunderbolt 3 (USB-C).
- An external keyboard and mouse or trackpad, either USB or wireless.
- A USB-C to USB adapter or cable if you're using a USB mouse or keyboard with a Mac that has USB-C ports.
- An external display or projector.
Enable closed-display mode
- Connect your USB keyboard or mouse to your Mac or external display, or pair your Bluetooth keyboard or mouse with your Mac. If you use a Bluetooth keyboard or mouse, choose Apple () menu > System Preferences, click Bluetooth, then verify Bluetooth is on.
- Connect your Mac to power with the AC power adapter. Some external displays, like the LG UltraFine 5K, also charge your Mac.
- Connect your external display or projector to the appropriate port on your Mac. Use an Apple video adapter if necessary. Some external displays have a USB cable that needs to be connected to your Mac.
- After your Mac notebook's desktop appears on the external display, close your computer's lid. You might have to press a key or click your mouse to wake the external display.
App To Keep Mac Awake 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 projector
Before you disconnect your display or projector, put your Mac to sleep.
Keep Mac On When Closed
Choose Apple () menu > Sleep, then disconnect your display or projector.