Take the 2-minute tour ×
Android Enthusiasts Stack Exchange is a question and answer site for enthusiasts and power users of the Android operating system. It's 100% free, no registration required.

I want to be able to connect my Nexus 7 in order to test my applications from Eclipse on the physical device.

I followed this Google guide.

My /etc/udev/rules.d/51-android.rules file contains this :

SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e42", MODE="0666"
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e40", MODE="0666"
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e41", MODE="0666"

The device is configured to use "Camera (PTP)" and "USB debugging" is checked too.

But adb devices lists no device.

What have I missed ?

share|improve this question

2 Answers 2

up vote 1 down vote accepted

The fact that the "Connected" message only appeared sometimes and that lsusb was unable to detect the Nexus casted a doubt on the cable.

I just tested with another cable and it works. My other cable seems to have a damaged connector.

share|improve this answer
As I saw many times since that ADB connectors are fragile and very susceptible to this kind of problem, I keep this answer which might help other people. There's obviously a flaw in the design of those connectors. –  dystroy Jan 6 at 17:28

My Asus Nexus7 (2012) will not show with lsusb, not with any of the 5 cables that with my nexus4 show fine.

Usb port works for charging and I can read usb stick with specific cable and application, so presumably the usb port is working fine. I have added several versions of udev rules and tried connection in usbdebuggin mode, normal mode even fastboot mode and recovery mode. Nothing seems to work. I have found some 5-10 helpful advice from various sites, all of them repeating same things that have not worked. I believe there are lot of people that have just given up after trying long enough.

I would be just happy to see my nexus 7 connected with lsusb command with my perfectly functional usb cable and Ubuntu 14.04 or 14.10 pc.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.