java - Samsung Galaxy 7" (GT-P6210) not detecting for USB debugging?

Question

I am using ubuntu Linux 10.04 Pc in that my Samsung Galaxy 7" (GT-P6210) homeycomb 3.2 is not detecting for development its showing in eclipse as

DeviceMonitor] Failed to start monitoring ???????????? in console

and in device tab its showing ?????????????.

Except this 7' GT-P6210 Samsung tablet all other Samsung devices are showing fine.

When I switch off the tablet and connected to the USB its showing the number and online as status. List of devices attached 4641199B0F8488AE device

why? whats the problem any solution.

NOTE: I already Added 51-android.rules

Samsung 04E8 

and also I enabled the USB debugging mode.

Its working fine in Mac.

EDIT: I got the product id thru $ lsusb command

Bus 001 Device 010: ID 04e8:6860 Samsung Electronics Co., Ltd 

I added product id in my rules.d file also

SUBSYSTEM=="usb", ATTRS{idVendor}=="04E8", ATTRS{idProduct}=="6860", MODE="0666", GROUP="plugdev"

after that I restarted udev

padmakumar@padmakumar-desktop:~$ sudo restart udev

then I tried

   padmakumar@padmakumar-desktop:~$ adb kill-server
    padmakumar@padmakumar-desktop:~$ adb start-server
    * daemon not running. starting it now on port 5037 *
    * daemon started successfully *
    padmakumar@padmakumar-desktop:~$ adb devices
    List of devices attached 
    ?    ???????????    offline 

//no luck so far

I found that its not detecting in updated ADT r16 and r15, except all other ADT version device is detecting very fine.

and also when device is in switch off mode its showing

name 464119990CEDAB9E, status as online and the OS version 3.2 in eclipse device tab. and in terminal also as below.

padmakumar@padmakumar-desktop:~$ adb devices
List of devices attached 
464119990CEDAB9E    device

any idea. Much appreciated :-)?

Answer 1

If, when you run adb devices, you see ???????????? in the list of devices, try stopping (adb kill-server) and restarting (adb start-server) the adb daemon.

Note that Samsung 04E8 is not a valid entry in 51-android.rules for udev. The correct line is:

SUBSYSTEM=="usb", SYSFS{idVendor}=="04e8", MODE="0666"

Also, make sure that you update the udev daemon after making this rules file change (sudo restart udev).