机器：XPS9550
网卡DW1560
WIFI挺正常，蓝牙升级后就不太正常，通过删除蓝牙配置文件来重置设置，注意，删除以后原来的配对会消失。亲测有效。
方法：4. Bluetooth issues on macOS Mojave
Bluetooth connection not working on macOS 10.14 Mojave is a known issue too. The symptoms look like your Mac just wouldn’t connect to Bluetooth, or in some cases, refuse to turn itself off.
To address this injustice, it’s recommended to delete the Bluetooth plist file — don’t worry it will recreate itself upon the next Bluetooth launch. But just in case, copy the file to some safe location.
Click on Finder > Go to Folder…
Type in /Library/Preferences.
Find com.apple.Bluetooth.plist file and delete it.
Restart your Mac.
参考资料：https://macpaw.com/how-to/fix-macos-mojave-problems#part4
网卡DW1560
WIFI挺正常，蓝牙升级后就不太正常，通过删除蓝牙配置文件来重置设置，注意，删除以后原来的配对会消失。亲测有效。
方法：4. Bluetooth issues on macOS Mojave
Bluetooth connection not working on macOS 10.14 Mojave is a known issue too. The symptoms look like your Mac just wouldn’t connect to Bluetooth, or in some cases, refuse to turn itself off.
To address this injustice, it’s recommended to delete the Bluetooth plist file — don’t worry it will recreate itself upon the next Bluetooth launch. But just in case, copy the file to some safe location.
Click on Finder > Go to Folder…
Type in /Library/Preferences.
Find com.apple.Bluetooth.plist file and delete it.
Restart your Mac.
参考资料：https://macpaw.com/how-to/fix-macos-mojave-problems#part4
