1. View USB device, command LSUSB

The result is as follows: 
 Lee@asus:/usr/local/adt/adt-bundle-linux-x86_64-20130717/sdk/platform-tools$ lsusb
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 0cf3:3005 Atheros Communications, Inc. AR3011 Bluetooth
Bus 001 Device 004: ID 1bcf:2883 Sunplus Innovation Technology Inc.
Bus 002 Device 003: ID 17ef:6019 Lenovo
Bus 002 Device 007: ID 2717:9039last one2717：9309is Xiaomi2，2717is vendorid,9309is Productid

2. Create a new 70-ndroid.rules file below /etc/udev/rules.d/ to command Sudo Gedit /etc/udev/rules.d/70-ndroid.rules

Add to the file: 
 Subsystem =="usb", ATTR{idVendor}=="2717",ATTRS{idProduct}=="9309", MODE="0666"Note: This70-android.rulesFile name seems to be named at will, 
 for example51-android.rules，52-android.rulesseems to be all possible. Note that the punctuation is all under English.

3. Give 70-Android.rules weighted, command: Sudo Chmod A+RX /ETC/udev/rules.d/70-ndroid.rules (sometimes not needed)

4. Restart the udev service, command: Sudo Service Udev Restart

5. Adb Kill-Server, and then adb devices, there is still no device.

6. Command: echo “0x2717”> ~/.android/adb_usb.ini

7. The mobile phone is disconnected, heavy link.

8.Adb Kill-Server, and then adb devices