我最近将我的MBP Retina 2013更新为Sierra GM,今天它停止连接Android设备.

我安装了Android SDK,并提供了许多不同操作系统版本的设备.但是当我将它们连接到我的MacBook时,它们只是充电,ADB不起作用,我根本看不到它们连接到USB：

$ioreg -p IOUSB
+-o Root  <class IORegistryEntry, id 0x100000100, retain 17>
  +-o Root Hub Simulation Simulation@1d000000  <class AppleUSBRootHubDevice, id 0x1000002c4, registered, matched, active, busy 0 (11 ms), retain 9>
  | +-o IOUSBHostDevice@1d100000  <class AppleUSBDevice, id 0x1000002c6, registered, matched, active, busy 0 (11 ms), retain 12>
  |   +-o IOUSBHostDevice@1d180000  <class AppleUSBDevice, id 0x1000002e8, registered, matched, active, busy 0 (11 ms), retain 13>
  |     +-o Apple Internal Keyboard / Trackpad@1d182000  <class AppleUSBDevice, id 0x100000309, registered, matched, active, busy 0 (162 ms), retain 15>
  |     +-o BRCM20702 Hub@1d181000  <class AppleUSBDevice, id 0x100000324, registered, matched, active, busy 0 (12 ms), retain 12>
  |       +-o Bluetooth USB Host Controller@1d181300  <class AppleUSBDevice, id 0x100000352, registered, matched, active, busy 0 (12 ms), retain 17>
  +-o Root Hub Simulation Simulation@1a000000  <class AppleUSBRootHubDevice, id 0x1000002cb, registered, matched, active, busy 0 (11 ms), retain 9>
  | +-o IOUSBHostDevice@1a100000  <class AppleUSBDevice, id 0x1000002cd, registered, matched, active, busy 0 (12 ms), retain 12>
  |   +-o FaceTime HD Camera (Built-in)@1a110000  <class AppleUSBDevice, id 0x100000503, registered, matched, active, busy 0 (114 ms), retain 19>
  +-o Root Hub Simulation Simulation@14000000  <class AppleUSBRootHubDevice, id 0x1000012c4, registered, matched, active, busy 0 (1 ms), retain 8>

当我连接我的iPhone时：

$ioreg -p IOUSB
+-o Root  <class IORegistryEntry, id 0x100000100, retain 17>
  +-o Root Hub Simulation Simulation@1d000000  <class AppleUSBRootHubDevice, id 0x1000002c4, registered, matched, active, busy 0 (11 ms), retain 9>
  | +-o IOUSBHostDevice@1d100000  <class AppleUSBDevice, id 0x1000002c6, registered, matched, active, busy 0 (11 ms), retain 12>
  |   +-o IOUSBHostDevice@1d180000  <class AppleUSBDevice, id 0x1000002e8, registered, matched, active, busy 0 (11 ms), retain 13>
  |     +-o Apple Internal Keyboard / Trackpad@1d182000  <class AppleUSBDevice, id 0x100000309, registered, matched, active, busy 0 (172 ms), retain 15>
  |     +-o BRCM20702 Hub@1d181000  <class AppleUSBDevice, id 0x100000324, registered, matched, active, busy 0 (12 ms), retain 12>
  |       +-o Bluetooth USB Host Controller@1d181300  <class AppleUSBDevice, id 0x100000352, registered, matched, active, busy 0 (12 ms), retain 17>
  +-o Root Hub Simulation Simulation@1a000000  <class AppleUSBRootHubDevice, id 0x1000002cb, registered, matched, active, busy 0 (11 ms), retain 9>
  | +-o IOUSBHostDevice@1a100000  <class AppleUSBDevice, id 0x1000002cd, registered, matched, active, busy 0 (12 ms), retain 12>
  |   +-o FaceTime HD Camera (Built-in)@1a110000  <class AppleUSBDevice, id 0x100000503, registered, matched, active, busy 0 (122 ms), retain 19>
  +-o Root Hub Simulation Simulation@14000000  <class AppleUSBRootHubDevice, id 0x1000012c4, registered, matched, active, busy 0 (1 ms), retain 9>
    +-o iPhone@14200000  <class AppleUSBDevice, id 0x100001414, registered, matched, active, busy 0 (3 ms), retain 19>

我已经尝试过了：

> Windows方式(重启MacBook,重启设备).
>使用不同的USB线.
>连接到不同的端口(2个可用).
>使用不同的设备(已尝试3台三星设备,1台华硕和1台HTC).

更新后几天一切都很好,但今天不起作用.

有什么建议？

解决方法:

我注意到你没有尝试的一件事是重置PRAM / NVRAM或SMC.

重置PRAM / NVRAM

较旧的Mac具有所谓的参数RAM(PRAM),较新的Mac使用非易失性随机存取存储器(NVRAM).以下是重置PRAM / NVRAM的方法：

>关闭机器.是的,完全关闭,而不仅仅是退出.
>按电源按钮,然后按command-option-p-r键.您必须确保在出现灰色屏幕之前按下这些键,否则它将无法工作.
>按住这些键,直到你的Mac再次重新启动,你在这里启动铃声.
>放开按键,让Mac正常重启.

注意：当您重新登录时,您可能需要重新调整一些系统首选项(例如鼠标速度,时间和日期/时区等).

重置SMC

您的计算机的系统管理控制器(SMC)也可以重置.重置SMC的说明取决于三件事：

>您的设备是否使用内置电池供电？ (在你的情况下,是的)
>您的设备是否使用可拆卸电池供电？
>您的设备是否只是从墙上断电？

现在,为了可能来到这里寻找同一问题答案的其他人,我将为这三个人提供流程.

对于MacBook Pro,MacBook Airs和MacBooks,你不能自己取出电池(即它是一个内置电池),这就是你做的：

>关闭计算机
>保持MagSafe适配器(电源线)已插入.
>同时按下shift-option-control(键盘左侧)和电源按钮
>放手吧
>使用电源按钮重新打开计算机.

对于可以取出电池的MacBook Pro,MacBooks等,这就是您的操作：

>关闭计算机
>断开MagSafe插头(电源线)与计算机的连接
>取出电池
>按下电源按钮5秒钟然后松开
>重新放入电池
>重新连接MagSafe线(或电源线)
>使用电源按钮重新打开计算机

对于只能从墙上的电源点运行的iMac,Mac Pro,Mac Minis等

>关闭计算机
>拔掉电源插头
>按住电源按钮5秒钟
>将其重新插入并打开.

希望这可以帮助.请回复并告诉我们.