某天发现自己的Magic Mouse2很飘，移动受阻。于是百度了一下解决方法，发现千篇一律都是下面这样的：


//在mac中终端输入
defaults read -g com.apple.mouse.scaling //这个命令会查看当前鼠标移动速度
defaults write -g com.apple.mouse.scaling 5 //这个命令是设置默认鼠标移动速度我设置的是5


但是并不能解决问题，于是！我到外面的世界找答案了。最终解决了问题，让Magic Mouse2重获新生，贴一下汇总方法：

Apple’s initial Magic Mouse and the follow-up Magic Mouse 2 exhibit few quirks. You may not think about the Magic Mouse until it suddenly stops tracking, the cursor becomes jerky, or the cursor moves super slow or super fast. When your Apple mouse is not working, there are several fixes you can try.

Causes of an Apple Mouse Not Working

When the Magic Mouse loses its Bluetooth connection with the computer or its battery dies, it doesn’t function. If the optical sensor is dirty, the cursor may move in a jerky manner. If the cursor moves too slowly or too fast, the settings may be the cause. A corrupt preference file can cause all sorts of jerky movements.

How to Fix Magic Mouse Tracking Problems

Most of the fixes for an Apple mouse not working correctly are simple. Try these solutions to get your mouse up and running in almost no time.

1. Reseat the battery if you use a first-generation Magic Mouse and experience hesitant tracking behavior. The most likely reason is that the batteries in the mouse lost contact with the battery terminals. The result is that the Magic Mouse and Mac momentarily lose Bluetooth connectivity. To see if the mouse has a battery connectivity problem, lift the Magic Mouse off of the surface you’re using it on. If the green power LED blinks, the batteries are probably loose. There are ways to fix these kinds of Magic Mouse disconnect issues.

2. Charge the battery of a Magic Mouse 2. It doesn’t have the battery terminal problem because it doesn’t use standard AA batteries. Instead, Apple created a custom rechargeable battery pack for the second-generation mouse that you can’t access. Check the battery charge by clicking the Bluetooth icon on the Mac menu bar or in the Mouse system preferences. If the charge is low, take a break and plug it in.

3. Fix a dirty optical sensor. If you have a Magic Mouse 2 or can rule out a battery problem in your first-generation Magic Mouse, the mouse may be skipping or hesitating because debris or dirt is lodged in the mouse’s optical sensor. To fix this issue, turn the mouse over and use compressed air to blow out the dirt. If you don’t have compressed air on hand, blow into the sensor opening. Before putting the mouse on your work surface, clean the mouse pad or desktop area where you use the Magic Mouse.

4. Check the Magic Mouse settings. Go to System Preferences > Mouse > Point & Click. If the Tracking speed slider is set to either an extremely slow or extremely fast speed, adjust it to a speed that suits you better.

5. Delete a damaged preference file. The preference file that your Mac uses to configure the Magic Mouse when you first turn it on may be corrupt. Locate the ~/Library/Preferences file and drag the following two files to the trash.

   • com.apple.AppleMultitouchMouse.plist
   • com.apple.driver.AppleBluetoothMultitouch.mouse.plist

   When you restart the Mac, it recreates the default preference files for the mouse. Open System Preferences and reconfigure the mouse to meet your needs.

   Before changing or deleting files in the Library folder, use Time Machine to back up the data on your computer.

   The ~/Library/Preferences file is hidden on a Mac by default. Access it by going to Finder > Go > Go to Folder and typing ~/Library. Then select Go.

6. Seek professional help. If these fixes don’t solve the problem, you may have a hardware issue on your hands. Make an appointment at an Apple Store or take the mouse to an Apple Authorized Service Provider to evaluate and, if possible, repair the mouse.

   Sometimes, mice just die and can’t be fixed. If that’s the case for you, don’t fret. There are plenty of great mice on the market just for Macs that you can snag.

翻译一下，意思就是：

1、一代的鼠标换电池；

2、二代的鼠标充电；

3、光传感器脏了，清洁一番；

4、检查魔术鼠标设置。转到“系统偏好设置” >“鼠标” >“指向并单击”。

5、删除损坏的首选项文件。首次打开 Mac 时用于配置 Magic Mouse 的首选项文件可能已损坏。找到 ~/Library/Preferences 文件并将以下两个文件拖到垃圾箱中。

• com.apple.AppleMultitouchMouse.plist
• com.apple.driver.AppleBluetoothMultitouch.mouse.plist

6、送修

我的便是第三个，清洁一下！！！