really, I do all my efforts to run an android project through eclipse on a tablet "Samsung galaxy Tab s2/ GT-P3100" under Ubuntu 12.04.

i add the vendor id of samsung in ~/.android/adb_usb.ini

   0x04e8

i add rules in /etc/udev/rules.d/51-android.rules as following :

SUBSYSTEMS=="usb", ATTRS{idVendor}=="04e8", ATTRS{idProduct}=="6860", MODE="0666"

ACTION=="add", SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ENV{ID_USB_INTERFACES}=="*:ff420?:*", MODE="0666"

then , i restart udev & i run the following command

sudo udevadm control --reload-rules

i updates /etc/udev/rules.d/99-android.rules

SUBSYSTEM=="usb", ATTRS{idVendor}=="04e8", SYMLINK+="android_adb", MODE="0666"

the thing that perplexed me is the listing of the tab when running the following cmd :

abdennour@estifeda1:~$ lsusb 

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub

Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub

Bus 001 Device 003: ID 125f:a11a A-DATA Technology Co., Ltd. 

Bus 002 Device 003: ID 413c:2107 Dell Computer Corp. 

Bus 002 Device 004: ID 046d:c077 Logitech, Inc. 

Bus 001 Device 009: ID 04e8:6860 Samsung Electronics Co., Ltd GT-I9100 Phone [Galaxy S II]

And the device also is well mounted:

I finally recourse a very long solution but, as usual, in vain :