kinect not be connected in groovy

edit

hi, after I install rgbdslam package , kinect for windows plug into my pc ，use the command: $ lsusb , can see it:

Bus 002 Device 015: ID 045e:02c2 Microsoft Corp.
Bus 002 Device 004: ID 5986:0292 Acer, Inc
Bus 002 Device 017: ID 045e:02be Microsoft Corp.
Bus 002 Device 018: ID 045e:02bf Microsoft Corp.

but，when i use command $ roslaunch rgbdslam kinect+rgbdslam.launch the problem occurred

[ INFO] [1397707920.526924735]: No devices connected.... waiting for devices to be connected
[ INFO] [1397707923.527303917]: No devices connected.... waiting for devices to be connected