问题
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:
- Reboot my computer choosing different kernel versions
- Restarting adb with adb kill-server and adb start-server
- Plugging the tablets cable into 4 other usb ports
- Rebooting the tablet
- Double checking that usb debugging is still enabled (yes, it is)
- lsusb (Should show Google Inc., but it is not)
- I have the latest sdk and all is up to date
- Googling, but I only found basic troubleshooting steps that I had already taken
- 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.
回答1:
You can try with these steps:
- stop the server with: adb kill-server.
- Go to ~/.android/ and if doesn't exist create the file: adb_usb.ini
- Add a line with the value: 0x18d1 (the vendorId of your device).
- 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.
回答2:
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.
回答3:
Have you checked the permissions of the block device? Try starting the adb server as root.
回答4:
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
来源：https://stackoverflow.com/questions/15844160/nexus-7-tablet-not-recognized-by-adb