[android] adb devices command not working

On my Gentoo/Funtoo linux system I am having similar problems:

I gotting always not the correct device description and insufficient permissions:

# sudo ./adb devices
List of devices attached 
????????????    no permissions
# ./adb usb
error: insufficient permissions for device

For me helps the howto from Google. In my case I needed to add the udev rule:

# cat /etc/udev/rules.d/51-android.rules 
SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", MODE="0666", GROUP="plugdev" 

and setting up the filesystem rights

# chmod a+r /etc/udev/rules.d/51-android.rules

After replugging my smartphone the access to the phone was successful, it also appears now in Eclipse' Android Device Chooser:

# sudo ./adb devices
List of devices attached 
3XXXXXXXXXXXXXC device
# sudo ./adb usb
restarting in USB mode

You also have to check the membership of your user to the plugdev-group.

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