Miya Pearson
If you want to prevent your MacBook from going to sleep when you close the lid, there are several methods you can try. One way is to use a dummy HDMI adapter to fake having an external display, or use software such as Amphetamine to keep your MacBook awake with the lid closed. Additionally, you can change settings in the Battery menu to disable the Prevent automatic sleeping toggle or adjust Bluetooth wake settings. Background tasks like iCloud syncing, Time Machine backups, or app activity may also prevent your MacBook from sleeping when the lid is closed.
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What You'll Learn
Check for background applications
If your MacBook does not go to sleep when you close the lid, it could be because of applications running unknowingly in the background. To check for these applications, you can use the Activity Monitor.
Here's how to use Activity Monitor to check for background applications:
- Open the Finder window by clicking on the Finder icon in the Dock or using the Command + Shift + H keyboard shortcut.
- In the Finder window, navigate to "Applications" and then "Utilities."
- In the Utilities folder, locate and open "Activity Monitor."
- Once Activity Monitor is open, click on the "CPU" tab to view a list of applications that are currently active.
- Review the list of active applications and identify any applications that you thought were closed but are still running.
- If you find an application that you want to quit, select it from the list and click the "X" button in the top-left corner of the Activity Monitor window. This will force quit the application immediately.
In addition to checking the CPU tab, it's worth reviewing the Login Items and Background Items in Activity Monitor, as these items can automatically open each time your device starts up and run in the background, potentially causing sleep issues. You can manage and delete these items using the Performance tool within CleanMyMac.
Another way to identify applications preventing your Mac from sleeping is by using the Terminal. Open the Terminal application and enter the "caffeinate -d" command, which will display a list of applications with a "Preventing Sleep" column. Check this column to see if any applications have "Yes" listed, indicating that they are preventing your Mac from sleeping.
By following these steps, you can identify and manage background applications that might be keeping your MacBook awake and preventing it from entering sleep mode when the lid is closed.
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Check for connected external devices
If your MacBook is not going to sleep when you close the lid, it could be due to connected external devices. External devices like USB drives, monitors, or peripherals can keep your MacBook awake. Try unplugging accessories one by one to see if the issue is fixed.
To do this, first, open CleanMyMac and select Performance from the left sidebar. Then, run a quick scan. Under Login Items, click Review, select the apps you want to delete, and click Remove. Repeat this process for Background Items.
Additionally, you can check your Bluetooth connections, as these can also interfere with sleep mode. Go to System Settings > Bluetooth and turn off Bluetooth to see if that resolves the issue. If you need to keep Bluetooth on, disconnect devices one by one to determine which one is causing the problem.
If you want to keep your MacBook awake with the lid closed, you can use Amphetamine or connect it to an external power source and a monitor, mouse, and keyboard.
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Use a dummy HDMI adapter
If you want to keep your MacBook Pro awake, one method is to use a dummy HDMI adapter. This involves connecting your MacBook Pro to an external display or device using an HDMI cable or adapter. By doing this, you can trick your MacBook Pro into thinking it is connected to an external display, even when the lid is closed.
To do this, you will need to purchase an HDMI adapter that is compatible with your MacBook Pro model. Different MacBook Pro models have different ports, so it is important to check which port your MacBook Pro has before purchasing an adapter. For example, if your MacBook Pro has a Thunderbolt 3 port, you will need to purchase a Thunderbolt 3 to HDMI adapter.
Once you have the correct adapter, simply connect it to your MacBook Pro and then connect an HDMI cable to the adapter. The other end of the HDMI cable can be connected to a TV, display, or other HDMI device. By doing this, you are creating a dummy connection that fools your MacBook Pro into thinking it is connected to an external display.
It is important to note that this method may not work with all MacBook Pro models or configurations. Additionally, it is always a good idea to check the specifications of the adapter to ensure it is compatible with your specific MacBook Pro model. Some adapters may not support certain resolutions or features, so it is important to do your research before purchasing.
Overall, using a dummy HDMI adapter is a creative way to keep your MacBook Pro awake even when the lid is closed. By simulating an external display connection, you can trick your MacBook Pro into staying active and bypassing its default sleep settings when the lid is closed. This method can be especially useful if you need to remotely access your MacBook Pro or use it in a setup where the lid needs to remain closed.
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Use the 'caffeinate' console command
The caffeinate command is a feature included in macOS that prevents the system from sleeping. It is a command-line tool that can be found in /usr/bin/caffeinate and is used to keep your Mac awake while you download or upload files, watch a movie, or complete a process.
To use the caffeinate console command, open the Terminal application on your MacBook Pro. You can find it in the Utilities folder inside the Applications folder. Once you have the Terminal open, you can use the caffeinate command by typing the following command:
Caffeinate
This command will prevent your MacBook Pro from going to sleep automatically due to inactivity. It creates assertions that alter the system's sleep behavior. By default, it prevents idle sleep, but you can customize its behavior with various options. For example:
Caffeinate -u
This option declares user activity, turning the display on and preventing sleep. It has a default 5-second timeout if not specified. So, if you're running a long build process, you can use:
Caffeinate -i npm run build
This command will keep your MacBook Pro awake until the build process is complete.
Please note that while the caffeinate command is a convenient way to keep your MacBook Pro awake, it is always a good idea to let your Mac go to sleep when you don't need it. This helps conserve energy and can also help extend the life of your hardware.
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Adjust sleep and wake settings
Adjusting the sleep and wake settings on your MacBook Pro can help you prevent it from automatically sleeping when you close the lid. Here are the steps you can follow:
Check for Applications Running in the Background
Firstly, it's important to check if any applications are unknowingly running in the background, as this could be a reason why your MacBook isn't sleeping when you close the lid. To do this, open the Finder window, go to Applications > Utilities, and launch the Activity Monitor. Under the CPU tab, check which items are listed. If you find any applications running that you thought were closed, select the application from the list and click the 'X' button to quit the process immediately.
Manage Login Items and Background Activity
Login items and launch agents are applications that automatically open each time you turn on your device. These can consume system resources and sometimes run in the background, causing sleep issues. To manage these, you can use the CleanMyMac app and select 'Performance' from the left sidebar. From there, you can review and delete any unnecessary login items and background items.
Disconnect External Devices
Peripheral devices such as monitors, keyboards, and USB drives connected to your MacBook could prevent it from entering sleep mode when you close the lid. Try safely removing all connected devices and then reinstalling them one by one, testing the sleep mode in between to identify if any of them are causing the issue.
Adjust Bluetooth and Network Settings
Bluetooth connections can also interfere with your MacBook's sleep mode. Go to System Settings > Bluetooth and try turning Bluetooth off. If you need to keep Bluetooth on, disconnect individual devices to pinpoint if any specific device is causing the problem. Additionally, you can set your MacBook to "Wake for network access," which will allow your Mac to run updates even when it's sleeping.
Utilize Amphetamine or Similar Tools
If you want to keep your MacBook awake with the lid closed, you can use applications like Amphetamine or Caffeinate. These tools can prevent your MacBook from sleeping, but they may not work in all scenarios, especially if there are no active network connections.
Set Display and Sleep Preferences
You can adjust your display and sleep preferences to prevent automatic sleeping. Go to System Settings or System Preferences from the Apple menu, click Lock Screen, and then select the menu next to "Turn display off on power adapter when inactive" and pick "Never." If this option isn't available, go to Battery > Power Adapter and move the slider to "Never."
Additionally, you can enable settings like "Prevent automatic sleeping on power adapter when the display is off" and "Put hard disks to sleep when possible" to fine-tune your MacBook's sleep behavior.
By following these steps and adjusting the sleep and wake settings, you should be able to prevent your MacBook Pro from automatically sleeping when you close the lid, allowing you to perform tasks like downloading files or playing music without interruption.
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Frequently asked questions
By default, a MacBook goes to sleep when you close the lid. To prevent this, you can install an app such as Amphetamine or use a dummy HDMI adapter to fake having an external display. Alternatively, you can change your settings by going to System Settings or System Preferences from the Apple menu > Click Lock Screen > Select the menu next to "Turn display off on power adapter when inactive" > Pick "Never".
Open the Finder window > Applications > Utilities > Activity Monitor. Under the CPU tab, check which items are listed. If you notice an application running that you thought was closed, select it from the list and click the X button to quit the process immediately.
Yes, you can use your MacBook without opening the lid by connecting it to an external display. You can also wake your MacBook from sleep without opening the lid by clicking or moving the mouse or tapping on the keyboard.
