在Mac上重置蓝牙(Bluetooth)可以解决阻止 macOS 设备与无线外围设备和配件通信的各种问题。我们将展示如何以及何时进行。
如果您在 iMac、Mac mini或MacBook Pro/Air上使用无线设备时遇到困难，解决问题的一种方法是重置蓝牙(Bluetooth)。有几种方法可以做到这一点。
您可以断开并重新连接有问题的蓝牙(Bluetooth)设备，重置Mac上的(Mac)蓝牙(Bluetooth)模块，或删除操作系统的蓝牙(Bluetooth)首选项文件。重置NVRAM也有帮助。
什么时候应该在Mac上重置蓝牙(Bluetooth)
尽管出于多种原因建立了连接，蓝牙(Bluetooth)设备仍可能无法与您的Mac配对或导致行为不稳定。如果您无法通过标准故障排除解决问题，您可能正在处理需要重置
蓝牙的情况。(Bluetooth)
这通常涉及重置与蓝牙(Bluetooth)设备的有问题的连接、重新启动 Mac 的蓝牙(Bluetooth)模块或强制操作系统重新创建其蓝牙(Bluetooth)首选项文件。在Intel Mac 上(Intel Macs)，您还可以重置NVRAM以解决严重的蓝牙(Bluetooth)问题。
如果您尚未对相关设备执行任何故障排除，我们建议您在重置Mac上的蓝牙(Bluetooth)之前按照以下建议进行操作。
检查兼容性
如果蓝牙(Bluetooth)设备拒绝与您的Mac配对，最好排除任何潜在的兼容性问题。可能是该设备需要更新版本的 macOS，或者它根本不支持Mac，例如Apple Watch。检查设备包装或制造商的网站以获取与兼容性相关的信息。
将其放入发现中
如果不先使其可发现，则可能无法将蓝牙(Bluetooth)设备与Mac配对。(Mac)这可能涉及访问 iPhone 上的蓝牙(Bluetooth)选项屏幕或按住Logitech MX Master上的 Easy-Switch 按钮。再次(Again)，检查包装或制造商的网站以获取具体说明。
让设备靠近
尽管蓝牙(Bluetooth)覆盖了相当远的距离（大约 30 英尺），但不要认为这是理所当然的。如果您无法配对设备或连接经常断开，请将其靠近您的Mac。
重启或重置设备
您是否尝试过重新启动或重置相关设备？如果没有，请尝试。例如，这里是如何重置一对(reset a pair of AirPods)拒绝正常工作的 AirPods。同时重新启动Mac(Mac)也是一个好主意。
避免蓝牙干扰
蓝牙干扰也是一个因素。在尝试再次将设备与Mac配对或使用之前，请尝试远离常见的干扰源，例如非屏蔽电源线、厨房设备和Wi-Fi路由器。
充电装置
蓝牙(Bluetooth)设备的剩余电池寿命很短是日常使用过程中行为不稳定的另一个原因。给它充电或更换电池并检查是否有区别。
更新设备固件和 Mac
(Bluetooth)运行过时固件的蓝牙设备可能是持续存在连接问题的另一个原因。更新它并检查是否有影响。例如，以下是如何使用最新固件更新一对 AirPods(update a pair of AirPods with the latest firmware)。
当您使用它时，还值得更新Mac上的系统软件。要检查新的 macOS 更新，请打开Apple菜单并选择System Preferences > Software Update。
安装支持软件
某些蓝牙(Bluetooth)外围设备（例如鼠标、扬声器和打印机等）可能无法正常工作，除非您安装额外的驱动程序或配套应用程序。访问制造商网站上的下载(Downloads)页面并查找任何适用的软件，例如您可以下载的Logitech Options。
重置蓝牙连接
如果有问题的蓝牙(Bluetooth)设备已经与您的Mac配对，您必须首先重置蓝牙(Bluetooth)连接。要做到这一点：
1. 打开Apple菜单并选择系统偏好设置(System Preferences)。
2. 选择标有蓝牙(Bluetooth)的类别。
3. 突出显示蓝牙(Bluetooth)设备并选择移除(Remove)按钮（形状像 X）。或者，按住 Control 键单击(Control-click)设备并在上下文菜单中
选择移除。(Remove)
4. 再次选择删除进行确认。
5. 对蓝牙(Bluetooth)设备重复配对过程，然后将其与您的Mac重新配对。
重置 Mac 的蓝牙模块
如果将设备与Mac(Mac)取消配对并重新配对没有帮助（或者您在配对时遇到问题），则必须重置Mac的蓝牙(Bluetooth)模块。该过程因 macOS 版本而异。
macOS Big Sur 及更早版本
1.按住 Shift + Option键的同时选择菜单栏上的蓝牙图标（如果看不到，请打开(Bluetooth)控制中心(Control Center)） 。
2. 打开调试(Debug)菜单并选择重置蓝牙(Reset)模块(Bluetooth Module)。仅在 macOS Big Sur中，该选项应在蓝牙(Bluetooth)主菜单上可见。
3.选择确定(Select OK)确认。所有蓝牙(Bluetooth)外围设备将自动断开并重新连接。
注意：如果您在使用Apple制造的(Apple)蓝牙(Bluetooth)设备（例如Magic Mouse或Trackpad）时遇到问题，您可以使用蓝牙菜单中的(Bluetooth)出厂(Factory)重置所有连接的Apple设备选项将设备重置为出厂默认设置。
macos Monterey 及以后
1. 打开Launchpad并在Mac上选择其他> Terminal。
2. 键入以下命令并按 Enter：
须藤 pkill 蓝牙
3. 输入 Mac 的管理员密码，然后再次按Enter。
删除蓝牙首选项文件
您可以通过删除包含 Mac蓝牙(Bluetooth)首选项的PLIST文件来继续解决蓝牙连接问题。(Bluetooth)这应该可以解决由损坏的蓝牙(Bluetooth)配置引起的问题。
1. 打开Finder，在菜单栏选择Go > Go文件夹，并访问以下路径：
/图书馆/首选项
2. 按住 Control 键单击或右键单击以下文件，然后选择移动(Move)到废纸篓(Trash)。
com.apple.Bluetooth.plist
3. 重新启动您的Mac。操作系统将在启动期间自动重新创建文件。
注意：如果您遇到更多蓝牙(Bluetooth)问题，请打开垃圾箱(Trash)并恢复已删除的文件。
重置 NVRAM（或 PRAM）
NVRAM（非易失性随机存取存储器）保存与Mac上的硬件相关的各种形式的内存，包括蓝牙(Bluetooth)。只要Mac在Intel芯片组上运行，您就可以尝试重置它。
注意：如果您使用无线键盘，请在开始前
通过USB将其连接到您的(USB)Mac 。
1. 关闭你的 Mac。
2. 按住Option、Command、 P 和 R 键，然后重新打开Mac。
3. 继续按住按键，直到您第二次听到Mac铃声。如果您使用带有Apple T2 安全芯片的(Apple T2 Security Chip)Intel Mac，请继续按住按键，直到您第二次看到Apple标志。
如果重置NVRAM没有帮助，您可以通过重置Mac 上
的系统管理控制器 (SMC)继续。(resetting the System Management Controller (SMC))
如果问题仍然存在
如果蓝牙(Bluetooth)问题仍然存在，则可能是蓝牙(Bluetooth)设备出现故障并需要更换。但是，如果它在其他设备上运行没有问题，则问题可能与您Mac上的(Mac)蓝牙(Bluetooth)硬件有关。在这种情况下，请联系 Apple 支持或在当地的(Contact Apple Support)Genius Bar 天才吧(Genius Bar)预约。
How to Reset Bluetooth on Mac and When You Need To
Resetting Bluetooth on Mac can resolve various issues preventing a macOS devіce from communicating with wirеless peripherals and accessories. Wе will show how and when to do it.
If you encounter difficulties while using a wireless device on your iMac, Mac mini, or MacBook Pro/Air, one way to troubleshoot the issue involves resetting Bluetooth. There are several ways to do that.
You can disconnect and reconnect the problematic Bluetooth device, reset the Bluetooth module on your Mac, or delete the operating system’s Bluetooth preferences file. Resetting the NVRAM can also help.
When Should You Reset Bluetooth on Mac
Bluetooth devices can fail to pair to your Mac or result in erratic behavior despite establishing a connection for any number of reasons. If you can’t resolve the issue with standard troubleshooting, you might be dealing with a situation that warrants a Bluetooth reset.
That typically involves resetting the problematic connection with a Bluetooth device, rebooting the Mac’s Bluetooth module, or forcing the operating system to recreate its Bluetooth preferences file. On Intel Macs, you can also reset the NVRAM to resolve serious issues with Bluetooth.
If you’ve yet to perform any troubleshooting for the device in question, we recommend that you work your way through the suggestions below before resetting Bluetooth on your Mac.
Check for Compatibility
If a Bluetooth device refuses to pair with your Mac, it’s best to rule out any potential compatibility issues out of the equation. It could be that the device requires a newer version of macOS or that it doesn’t support the Mac at all—e.g., Apple Watch. Check the device packaging or the manufacturer’s website for compatibility-related information.
Put It into Discovery
It may not be possible to pair the Bluetooth device with a Mac without making it discoverable first. That could involve visiting the Bluetooth options screen on an iPhone or holding down the Easy-Switch button on a Logitech MX Master. Again, check the package or the manufacturer’s website for specific instructions.
Bring the Device Closer
Although Bluetooth covers a fair distance (approximately 30 feet), don’t take that for granted. If you can’t pair the device or the connection drops regularly, bring it closer to your Mac.
Restart or Reset the Device
Have you tried restarting or resetting the device in question? If not, try that. For example, here’s how to reset a pair of AirPods that refuse to work correctly. It’s also a good idea to reboot your Mac in the meantime.
Avoid Bluetooth Interference
Bluetooth interference can also play a factor. Try moving away from common sources of interference—such as unshielded power cables, kitchen equipment, and Wi-Fi routers—before attempting to pair or use the device with your Mac again.
Charge Device
A Bluetooth device with little battery life remaining is another reason for erratic behavior during routine use. Charge it or replace its batteries and check if that makes a difference.
Update Device Firmware and Mac
Bluetooth devices running out-of-date firmware can be another reason for persistent connectivity issues. Update it and check if that makes a difference. For example, here’s how to update a pair of AirPods with the latest firmware.
While you’re at it, it’s also worth updating the system software on the Mac. To check for new macOS updates, open the Apple menu and select System Preferences > Software Update.
Install Support Software
Some Bluetooth peripherals—such as mice, speakers, and printers, etc.—may not work correctly unless you install additional drivers or companion apps. Visit the Downloads page on the manufacturer’s website and look for any applicable software—e.g., Logitech Options that you can download.
Reset the Bluetooth Connection
If the problematic Bluetooth device is already paired to your Mac, you must begin by resetting the Bluetooth connection. To do that:
1. Open the Apple menu and select System Preferences.
2. Select the category labeled Bluetooth.
3. Highlight the Bluetooth device and select the Remove button (shaped like an X). Or, Control-click the device and select Remove on the context menu.
4. Select Remove again to confirm.
5. Repeat the pairing process for the Bluetooth device and re-pair it to your Mac.
Reset Mac’s Bluetooth Module
If unpairing and re-pairing the device to your Mac doesn’t help (or you have trouble pairing it in the first place), you must reset the Mac’s Bluetooth module. The process is different depending on the macOS version.
macOS Big Sur and Earlier
1. Select the Bluetooth icon on the menu bar (open the Control Center if you can’t see it) while holding down the Shift + Option key.
2. Open the Debug menu and select Reset the Bluetooth Module. In macOS Big Sur only, the option should be visible on the main Bluetooth menu.
3. Select OK to confirm. All Bluetooth peripherals will disconnect and reconnect automatically.
Note: If you keep running into issues while using a Bluetooth device manufactured by Apple (e.g., the Magic Mouse or Trackpad), you can use the Factory reset all connected Apple devices option within the Bluetooth menu to reset the device to factory defaults.
macoS Monterey and Later
1. Open the Launchpad and select Other > Terminal on the Mac.
2. Type the following command and press Enter:
sudo pkill bluetoothd
3. Type in your Mac’s administrator password and press Enter again.
Remove Bluetooth Preferences File
You can continue troubleshooting Bluetooth connection issues by removing the PLIST file that holds your Mac’s Bluetooth preferences. That should resolve issues caused by a corrupt Bluetooth configuration.
1. Open Finder, select Go > Go to Folder on the menu bar, and visit the following path:
/Library/Preferences
2. Control-click or right-click the following file and select Move to Trash.
com.apple.Bluetooth.plist
3. Restart your Mac. The operating system will automatically recreate the file during startup.
Note: If you run into further issues with Bluetooth, open the Trash and restore the deleted file.
Reset NVRAM (or PRAM)
The NVRAM (non-volatile random-access memory) holds various forms of memory related to the hardware on your Mac, including Bluetooth. You can try resetting it so long as the Mac runs on an Intel chipset.
Note: If you use a wireless keyboard, connect it to your Mac via USB before you begin.
1. Shut down your Mac.
2. Press and hold the Option, Command, P, and R keys and turn your Mac back on.
3. Keep holding the keys until you hear the Mac chime for the second time. If you use an Intel Mac with an Apple T2 Security Chip, keep holding the keys until you see the Apple logo for the second time.
If resetting the NVRAM does not help, you can continue by resetting the System Management Controller (SMC) on your Mac.
If the Issue Persists
If the Bluetooth problem persists, it could be that the Bluetooth device is faulty and warrants a replacement. However, if it has no trouble working on other devices, the issue could be related to the Bluetooth hardware on your Mac. Contact Apple Support in that case or book yourself an appointment at the local Genius Bar.
