Persee ubuntu 14.04 OpenNI sample code error

Hi all,

I install ubuntu 14.04 image on my Persees. I have several Persees which bought at different time.
I can run openni sample code SimpleRead on the Persee which bought one yesrs ago.
But when I run SimpleRead on the Persee which bought recently, the output shows as follow:

orbbec@orbbec:~/OpenNI-Linux-Arm-2.2/OpenNI-Linux-Arm-2.2/Samples/Bin$ ./SimpleRead
Warning: USB events thread - failed to set priority. This might cause loss of data…
Wait failed! (timeout is 2000 ms)
waitForStreams: timeout reached

Wait failed! (timeout is 2000 ms)
waitForStreams: timeout reached

Wait failed! (timeout is 2000 ms)
waitForStreams: timeout reached

Wait failed! (timeout is 2000 ms)
waitForStreams: timeout reached

Can anyone help me to solve it? thanks