kinect green light keeps freshing. Seems no driver

edit

I have installed freenect from

                sudo apt-get install ros-hydro-freenect-stack

and also blacklist gspca_kinect(I am using Ubuntu 12.04 LTS)

But when I try the command

                roslaunch freenect_launch freenect.launch

It says that

                [ INFO] [1380174487.842752473]: No devices connected.... waiting for devices to be connected

and then I try lsusb

it shows me like

               Bus 002 Device 015: ID 045e:02c2 Microsoft Corp. 
               Bus 002 Device 016: ID 045e:02be Microsoft Corp. 
               Bus 002 Device 017: ID 045e:02bf Microsoft Corp.

These are kinect's and I could not find something like camera or others.

Could you please help me? Since for this Sept I could not even run kinect on Ubuntu and I feel confused.

Thank you so much and I will wait for the reply.