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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 ?

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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.

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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.

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