Ubuntu adb devices :???????????? no permissions 解决方法

Log in as root and create this file: /etc/udev/rules.d/51-android.rules.

Use this format to add each vendor to the file:
SUBSYSTEM=="usb", ATTR{idVendor}=="0bb4", MODE="0666", GROUP="plugdev" 

Now execute:
chmod a+r /etc/udev/rules.d/51-android.rules

参考1：

Ubuntu adb devices :???????????? no permissions 解决方法

http://jasonshieh.iteye.com/blog/1477547

参考2：官方参考

http://developer.android.com/guide/developing/device.html