Connecting Lenovo P780 to ADB on Ubuntu

Ohhh… Today I’ve faced one great trouble: recently I reinstalled my Ubuntu, so I lost all my configurations. And when I tried to connect my Lenovo P780 to debug my Android application, I saw horrible error:

$ adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
????????????    no permissions

Hey! Where did my smartphone gone?!

Fooling around in the internet, I found two simple steps to fix this:

1. find the VendorID and ProductID for your device running lsusb two times (just find the difference line): a. when your device is disconnected b. when your device is connected

   This will give you two outputs:

   $ # disconnected device
   
   $ lsusb
   Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 004: ID 064e:d213 Suyin Corp.
   Bus 001 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 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   
   $ # connected device (via USB)
   
   $ lsusb
   Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 004: ID 064e:d213 Suyin Corp.
   Bus 001 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 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 003 Device 006: ID 0bb4:0c03 HTC (High Tech Computer Corp.)
   Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   

   Note the row, which is present in the second output block and is absent in the first one:

   Bus 003 Device 006: ID 0bb4:0c03 HTC (High Tech Computer Corp.)
   

   For some reason, my phone is recognized as a HTC, but that does not bother me so much. We will need only two parts of that row:

   0bb4:0c03
   

   The 0bb4 is a VendorID and the 0c03 is the ProductID for my phone.

2. Add the phone attributes to the system. Sudo-edit the file /lib/udev/rules.d/69-libmtp.rules and point it to your device. Add a line like this (without any newlines):

   ATTR{idVendor}=="0bb4", ATTR{idProduct}=="0c03", SYMLINK+="libmtp-%k", MODE="0666", GROUP="audio", ENV{ID_MTP_DEVICE}="1", ENV{ID_MEDIA_PLAYER}="1"
   

   That should enable your system to see the device later.

3. Enable write permissions for your device. Sudo-edit the file /etc/udev/rules.d/51-android.rules (you may need to create it) and add one line there:

   SUBSYSTEM=="usb", ATTRS{idVendor}=="0bb4", ATTRS{idProduct} =="0c03", MODE="0666", GROUP="plugdev"
   

4. To check if your phone is recognized by adb, restart ABD server and check its device list:

   $ adb kill-server
   $ adb devices
   * daemon not running. starting it now on port 5037 *
   * daemon started successfully *
   List of devices attached
   0123456789ABCDEF    device