Nexus 7 tablet not recognized by adb

3
votes

I am having some strange behavior with the android sdk and my tablet. I am attempting to get my tablet recognized with:

adb devices -l

command.

Each time I plug the tablet in, a window on my computer pops up for a brief moment asking me recognizing the tablet as a camera and asking me what application do I want to open it with. Then it disappears before I click anything. On the tablet, it will say "allow usb debugging from such and such computer?". Some times that will disappear before I can click it. Other times I click it, but adb devices -l still does not recognize it. Then I check dmesg:

[ 3398.180553] usb 1-1: new high-speed USB device number 45 using ehci_hcd
[ 3398.321392] usb 1-1: New USB device found, idVendor=18d1, idProduct=4e44
[ 3398.321404] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=4
[ 3398.321411] usb 1-1: Product: Nexus 7
[ 3398.321416] usb 1-1: Manufacturer: asus
[ 3404.230444] usb 1-1: USB disconnect, device number 45

I am using Linux Mint 14. I've not had a problem until recently.

Here is a list of steps I've taken to troubleshoot the problem:

  1. Reboot my computer choosing different kernel versions
  2. Restarting adb with adb kill-server and adb start-server
  3. Plugging the tablets cable into 4 other usb ports
  4. Rebooting the tablet
  5. Double checking that usb debugging is still enabled (yes, it is)
  6. lsusb (Should show Google Inc., but it is not)
  7. I have the latest sdk and all is up to date
  8. Googling, but I only found basic troubleshooting steps that I had already taken
  9. More steps

I am unsure what else to do. But this loss in time of productivity is costing me. I am almost finished with my first app for a company and need to complete it, so I can sell them the product.

4
androidadb

4 Answers

5
votes

You can try with these steps:

  1. stop the server with: adb kill-server.
  2. Go to ~/.android/ and if doesn't exist create the file: adb_usb.ini
  3. Add a line with the value: 0x18d1 (the vendorId of your device).
  4. Save and close the file.

Try again. For me it worked (i'm using a 100 euros tablet...) Finally if you still have problems you can create an udev rule in /etc/udev/rules.d/51-android.rules, like the following:

SUBSYSTEM =="usb", ATTR{idVendor}=="18d1", MODE ="0666", GROUP ="plugdev"

And make sure that your user is in plugdev group. Hope this help.

1
votes

A friend gave me a new cable. Now my tablet shows with adb devices -l, lsusb, dmesg with no errors, and works from Eclipse Android SDK Bundle.

-1
votes

Have you checked the permissions of the block device? Try starting the adb server as root.

-2
votes

Do you have the right driver installed on your computer?

Even if the tablet is recognized, this doesn't necessarily mean the driver is installed.

You can find drivers for the Nexus 7 here: http://www.asus.com/Tablets_Mobile/Nexus_7/#support_Download_32