ubuntu 12.04 usb debugging stopped working

2
votes

using ubuntu 12.04 and LG optimus G E975, usb debugging was working fine 2 days ago and now it just stopped working, when I plug the device into my laptop (all 3 usb ports), it just shows the charging icon, here are the things I did so far:

  • make sure usb debugging is enabled in developer options

  • make sure the required rule is added in /etc/udev/rules.d/51-android.rules with the value:

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

  • restart the adb server as root:

    sudo adb kill-server then sudo adb start-server

  • changed the usb chord
  • changed the device with another device (huawei) which was also working fine 2 days ago
  • lsusb doesn't show device connected

none of the above seems to work, adb devices doesn't find anything, not even ??????. it's just empty. Any help is appreciated.

Edit: I've followed This as well, and it did not work, ubuntu still can't detect the device. using dmesg command doesn't show any changes before or after connecting and disconnecting the device from usb port.

2
androidlinuxubuntuadbusb-debugging
have you check usb debugging is enable in device settings>Developer options ? – Haresh Chhelana
@HareshChhelana as I mentioned as a first item in my check-list, yea it is enabled but it's still charging only, I suspect it's the laptop that is causing the problem since the other device is not working as well but sadly I don't have any other laptop or computer to check it on – arash moeen
@Skynet yea man I found that after posting this question and it's already in the process of update, I'll post back the results and will ask you to post as an answer later if it worked. thanks anyway – arash moeen
@Skynet it did not work, I followed the link and did everything as was mentioned, still no luck and adb can't detect my device – arash moeen
lsusb doesn't show device connected <--- That is the problem, you should be focusing on that issue first. Does connecting other USB devices show up in lsusb? Could the issue be in cable used? – ozbek

2 Answers

1
votes

If the device is not getting detected you should probably add the vendor Id in ~/.android/adb_usb.ini with sudo permission.

In the above case add 0x1004. After adding, restart the udev service with the command "sudo service udev restart" Now go to your adb location and kill-server and start server with sudo permission.

Try adb devices now and adb should be able to detect your device now.

-1
votes

In my case I had to add OWNER="<my login>" (e.g. ..., OWNER="port443") to make it work. It is enough to re-plug device and run adb kill-server + adb devices for device to show up. For some reason only group does not work, even though I am in that group.

I have another question on this specific issue: Ubuntu: ADB only recognizes device if OWNER is provided