如果您在将Mac置于睡眠模式时遇到问题，则可能是某些项目干扰了睡眠过程。您可以做一些事情来找到那些干扰项目。找到后，您可以将这些项目删除或停止在Mac上运行。
这些项目可以是您机器上的任何东西。可能是打印作业卡在队列中，蓝牙(Bluetooth)设备不断尝试唤醒您的机器，或者文件配置错误。
无论如何，有一些方法可以解决这个问题并成功地将您的Mac置于睡眠模式。
检查 Mac 上的能源设置(Check The Energy Settings On Your Mac)
能源设置面板可让您创建时间表，以便您的Mac何时以及何时不能进入睡眠模式。您可能需要检查这些设置并确认没有阻止您的机器进入睡眠状态的选项。
- 单击(Click)左上角的Apple标志，然后选择“(Apple)系统偏好设置”(System Preferences)选项。
- 在以下屏幕上，找到显示节能器(Energy Saver)的选项并单击它以将其打开。
- 当“节能器(Energy Saver)”面板启动时，您会发现一些选项可让您为Mac定义一些睡眠行为。您要单击的是右下角显示“计划”的选项。(Schedule)
- 在以下屏幕上，如果您或某人为您的Mac(Mac)设置了唤醒和睡眠时间表，您会看到它。您要确保这些选项不会导致您的Mac不进入睡眠模式。
如果您不确定该怎么做，您可以取消勾选这两个选项，它们将被禁用。
查找阻止 Mac 睡眠的应用程序(Find Apps That Prevent Mac Sleep)
如果您认为这是一个阻止Mac进入睡眠状态的应用程序，您的Mac会为您提供查找这些应用程序的方法。找到导致问题的应用程序后，您可以终止它们的进程或强制退出它们，然后让您的Mac进入睡眠状态。
- 单击Dock 中的Launchpad，搜索Activity Monitor，然后在它出现在屏幕上时单击它。
- 您将看到Mac上运行的所有进程的列表。要查找可能导致睡眠问题的原因，请单击顶部的View菜单，选择(View)Columns，然后单击Preventing Sleep。
- 将向实用程序添加一个新列。此列应该告诉您进程是否正在阻止睡眠模式。对于导致问题的所有进程，该列应显示“是”。(Yes)如果它说No，则该过程很好并且不会引起任何问题。
- 当您找到“防止睡眠(Preventing Sleep)”列显示“是(Yes)”的进程时，单击该进程，单击顶部的X图标，然后选择“(X)强制退出(Force Quit)” 。它会强制退出Mac上的进程。
请注意您强制退出的流程，因为您可能正在处理其中的一些流程，并且您可能在其中有未保存的工作。在关闭任何内容之前，请务必保存您的工作。
当您的 Mac 无法睡眠时强制退出应用程序(Force Quit Apps When Your Mac Won’t Sleep)
有时您已经知道阻止睡眠模式的应用程序，但该应用程序似乎没有正常关闭。在这种情况下，您可以强制关闭它。
- 按键盘上的Command + Option + Esc
- 单击(Click)要强制退出的应用程序，然后选择强制退出(Force Quit)。
该应用程序将被强制关闭。
在 Mac 上禁用蓝牙唤醒(Disable Bluetooth Wake Up On Mac)
Mac配备的一项功能是能够从支持蓝牙的设备唤醒您的机器(wake up your machine from a Bluetooth-enabled device)。当您想让机器进入睡眠状态时，这有时可能会导致问题。
但是，您可以禁用该选项，如下所示。
- 单击(Click)菜单栏中的蓝牙(Bluetooth)图标，然后选择打开蓝牙首选项(Open Bluetooth Preferences)。
- 您将在以下屏幕上看到您曾经连接到的设备列表。您需要找到并单击“高级(Advanced)”按钮。
- 您可以在以下屏幕上启用和禁用一些选项。取消勾选“允许蓝牙设备唤醒这台计算机( Allow Bluetooth devices to wake up this computer)”选项。然后点击确定(OK)。
现在该选项已禁用，您的蓝牙(Bluetooth)设备将无法唤醒您的Mac，并且您应该不会有任何问题让您的Mac处于睡眠模式。
清除打印队列(Clear The Printing Queue)
Mac无法睡眠的已知原因之一是打印作业卡在机器上。您可能尝试过打印某些东西，但效果不佳，现在您有一堆打印作业排在队列中。
清除这些作业应该可以让您的Mac进入睡眠状态。
- 单击(Click)顶部的Apple标志并选择(Apple)System Preferences。
- 在以下屏幕上选择打印机和扫描仪。(Printers & Scanners)
- 从左侧边栏中选择您使用的打印机。然后单击右侧窗格中显示“打开打印队列”的按钮。(Open Print Queue )
清除打印作业后，尝试将Mac置于睡眠模式。(Mac)
在 Mac 上禁用打印机共享(Disable Printer Sharing On Your Mac)
您可能需要关闭Mac上的打印机共享(printer sharing)，因为这有时需要您的Mac保持开启状态并防止其进入睡眠状态。
- 单击 Apple 徽标并选择System Preferences。
- 单击“共享(Sharing)”选项以管理您的共享选项。
- 在以下屏幕上，取消选中“打印机共享(Printer Sharing)”框。
您的打印机不再共享，您将无法从其他计算机访问它们。如果您想要恢复功能，只需打开您在上面禁用的选项。
在 Mac 上重置 NVRAM(Reset NVRAM On Your Mac)
重置NVRAM可能会帮助您修复Mac无法睡眠的问题，而且这很容易做到。
- 关闭你的 Mac。
- 启动 Mac 并同时按住Option + Command + P + R键。大约 20 秒后松开按键。
How To Fix a Mac That Won’t Sleep
If you’re fаcing issues pυtting your Mаc into sleep mode, you likely have some itеms interfering with the sleep procedure. There are a few thingѕ you can do to find those interfering items. Once found, you can have those items removed оr stoрped from running on your Mac.
These items could be anything on your machine. It could be a print job stuck in the queue, a Bluetooth device constantly trying to wake up your machine, or a misconfigured file.
Regardless, there are methods to overcome the issue and put your Mac into sleep mode successfully.
Check The Energy Settings On Your Mac
The energy settings pane is what allows you to create schedules as to when and when not your Mac can go into sleep mode. You might want to check these settings and verify that there’s no option preventing your machine from going to sleep.
- Click on the Apple logo at the top-left corner and select the System Preferences option.
- On the following screen, find the option that says Energy Saver and click on it to open it.
- When the Energy Saver pane launches, you’ll find some options that let you define some sleep behavior for your Mac. What you want to click on is the option that says Schedule at the bottom-right corner.
- On the following screen, if you or someone has set a wake-up and sleep schedule for your Mac, you’ll see it. You want to make sure that these options aren’t causing your Mac not to go into sleep mode.
If you aren’t sure what to do, you can untick both the options and they’ll be disabled.
Find Apps That Prevent Mac Sleep
If you think it’s an app that’s preventing your Mac from sleeping, your Mac provides you with a method to find these apps. Once you have found the apps causing the issue, you can then kill their processes or force quit them to then put your Mac to sleep.
- Click on Launchpad in your Dock, search for Activity Monitor, and click on it when it appears on your screen.
- You’ll see a list of all the processes running on your Mac. To find the ones that could be causing the sleep issue, click on the View menu at the top, select Columns, and then click on Preventing Sleep.
- A new column will be added to the utility. This column should tell you if a process is preventing the sleep mode. The column should say Yes for all the processes causing the issue. If it says No, that process is fine and isn’t causing any issue.
- When you find a process for which the Preventing Sleep column says Yes, click on the process, click on the X icon at the top, and select Force Quit. It’ll force quit the process on your Mac.
Be cautious what processes you force quit as you may be working on some of these and you may have your unsaved work in them. Be sure to save your work before you close anything.
Force Quit Apps When Your Mac Won’t Sleep
Sometimes you already know the app that’s preventing the sleep mode but the app doesn’t seem to close normally. In that case, you can force close it.
- Press Command + Option + Esc on your keyboard.
- Click on the app you want to force quit and select Force Quit.
The app will be forcibly closed.
Disable Bluetooth Wake Up On Mac
One of the features your Mac comes equipped with is the ability to wake up your machine from a Bluetooth-enabled device. This sometimes could cause issues when you want to put your machine to sleep.
You can disable the option, though, as the following.
- Click on the Bluetooth icon in your menu bar and select Open Bluetooth Preferences.
- You’ll see a list of devices you’ve ever connected to on the following screen. You need to find and click on the button that says Advanced.
- There will be a few options that you can enable and disable on the following screen. Untick the option that says Allow Bluetooth devices to wake up this computer. Then click on OK.
Now the option is disabled, your Bluetooth devices won’t be able to wake up your Mac and you shouldn’t have any issues keeping your Mac in sleep mode.
Clear The Printing Queue
One of the known causes of when your Mac won’t sleep is having your print jobs stuck on your machine. You may have tried printing something but that didn’t go well and now you have a pile of print jobs stuck in a queue.
Clearing these jobs should allow you to put your Mac to sleep.
- Click on the Apple logo at the top and select System Preferences.
- Select Printers & Scanners on the following screen.
- Select the printer you use from the left sidebar. Then click on the button that says Open Print Queue in the right-hand side pane.
- Clear the stuck print jobs you have on the following screen.
Try putting your Mac into sleep mode after clearing the print jobs.
Disable Printer Sharing On Your Mac
You might want to turn off printer sharing on your Mac as this sometimes requires your Mac to remain on and prevents it from sleeping.
- Click on the Apple logo and select System Preferences.
- Click on the option that says Sharing to manage your sharing options.
- On the following screen, untick the box that says Printer Sharing.
Your printers are no longer shared and you won’t be able to access them from other machines. Should you ever want the functionality back, just turn on the option you disabled above.
Reset NVRAM On Your Mac
Resetting NVRAM might help you fix when your Mac won’t sleep and it’s a pretty easy thing to do.
- Turn off your Mac.
- Boot up your Mac and hold down Option + Command + P + R keys simultaneously. Let go of the keys after about 20 seconds.
