Communication issue with Kobuki

Has anyone encountered the communication problem with Kobuki?

I am not sure if it is the driver problem of FTDI. But typing:

roslaunch kobuki_node minimal.launch --screen

will give the following information:

[ INFO] [1463718376.597344162]: Initializing nodelet with 3 worker threads.
[ INFO] [1463718376.610731746]: waitForService: Service [/mobile_base_nodelet_manager/load_nodelet] is now available.
[ WARN] [1463718376.936930495]: Kobuki : no robot description given on the parameter server
[ INFO] [1463718376.937144495]: Kobuki : configured for connection on device_port /dev/kobuki [/mobile_base].
[ INFO] [1463718376.937268662]: Kobuki : driver running in normal (non-simulation) mode [/mobile_base].
[ INFO] [1463718376.941907829]: Kobuki : Velocity commands timeout: 0.600000000 seconds [/mobile_base].
[ INFO] [1463718376.944288912]: Kobuki : using odom_frame [odom][/mobile_base].
[ INFO] [1463718376.946695579]: Kobuki : using base_frame [base_footprint][/mobile_base].
[ INFO] [1463718376.949164829]: Kobuki : publishing transforms [/mobile_base].
[ INFO] [1463718376.951651995]: Kobuki : using imu data for heading [/mobile_base].
[ WARN] [1463718376.955925995]: Kobuki : device does not (yet) available, is the usb connected?.
[ INFO] [1463718376.956605745]: Kobuki : device does not (yet) available on this port, waiting…
[ WARN] [1463718377.207064412]: Kobuki : no data stream, is kobuki turned on?
[ INFO] [1463718377.208936995]: Kobuki : initialised.
[ INFO] [1463718381.957848994]: Kobuki : device does not (yet) available on this port, waiting…
[ INFO] [1463718386.964141743]: Kobuki : device does not (yet) available on this port, waiting…
[ INFO] [1463718391.973517992]: Kobuki : device does not (yet) available on this port, waiting…
[ INFO] [1463718396.984184241]: Kobuki : device does not (yet) available on this port, waiting…
[ INFO] [1463718402.020342073]: Kobuki : device does not (yet) available on this port, waiting…
[ INFO] [1463718407.058601988]: Kobuki : device does not (yet) available on this port, waiting…
[ INFO] [1463718412.098228737]: Kobuki : device does not (yet) available on this port, waiting…
[ INFO] [1463718417.127606986]: Kobuki : device does not (yet) available on this port, waiting…
[ INFO] [1463718422.149934901]: Kobuki : device does not (yet) available on this port, waiting…

Solved.

Please DO NOT use Jetson pack to flash your turtlebot.

Instead, use the instructions given here:

https://devtalk.nvidia.com/default/topic/906018/jetson-tk1/-customkernel-the-grinch-21-3-4-for-jetson-tk1-developed/