Why does Ubuntu 14.04 not recognize my Android device?

Question

I am sure this has been asked many times before, including here and here. Still, the answers given are no help for me (I wonder why this whole stuff is not conveniently included in Android Studio. It would save a lot of time...).

Here is what I have done: After plugging in the device I used the command lsusb , which has one line in it as follows:

Bus 003 Device 002: ID 1004:633e LG Electronics, Inc.

I 'assume' this is my phone, since it is a LG G3 phone. Then, according to the answers I have found, I have inserted the following line into the new file /etc/udev/rules.d/51-android.rules:

SUBSYSTEM=="usb", ATTR{idVendor}=="1004", MODE="0666", GROUP="plugdev"

The group plugdev exists and I am in this group (i.e. the normal user). Then I have rebooted the laptop, and made adb kill-server and adb start-server, but the command adb devices still gives the following output:

$ adb devices
List of devices attached

How to fix this problem, so I can let AndroidStudio run the app on an actual phone?

Additional information:

On the phone I turned on 'USB debugging' as explained here
Output of dmesg does not show any usb-related error or warning.
Using different ports does not help.
Using a different cable does not help
Trying a different phone (Samsung) does not help either (after adding the Samsung-related line into the rules-file, restarting udev, etc.)

Have you enabled USB debugging in the phone's developer options? — Andrew Fielden, Oct 22 '15 at 11:47
I think so. I tapped the Build number seven times and it gave a message that I am a developer now. Maybe I have to do this all the time? No I don't... — Alex, Oct 22 '15 at 11:48
When you connect the phone, does it say 'USB debugging connected'? — Andrew Fielden, Oct 22 '15 at 11:48
Go into the phone's settings. Select Developer options. Turn on 'USB Debugging' — Andrew Fielden, Oct 22 '15 at 11:50
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/93066/discussion-between-alex-and-andrew-fielden). — Alex, Oct 22 '15 at 12:10

score 0 · Answer 1 · answered Oct 22 '15 at 17:07

The procedure described here to make your phone run the app does not seem to be complete! It contains errors, which lead to unsolvable problems!!

Here is the solution: After the developer mode is turned on, a new menu "Developer options" appear. On then must activate "USB debugging" within that new menu! See also this guide for a more correct explanation!

score -1 · Answer 2 · answered Jan 13 '17 at 01:48

Reinstalled Ubuntu over previous install of it. Connect USB (moto x Android and desktop Ubuntu), now it is recognized.
Have problems with Ubuntu, but a reinstall fixes it.

I don't trust hard drives to store my data, burn CDs now. Hard drives break, operating systems may need to be reinstalled. Flash drives can break.

If put Ubuntu and XP on same hard drive, while in ubuntu can copy and paste files from android phone to xp partition. Windows doesn't recognize my smartphone but Ubuntu does, so I use Ubuntu to get files from phone to xp.

Why does Ubuntu 14.04 not recognize my Android device?

2 Answers2