USB events thread - failed to set priority ... Number devices connected: 2

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Hello, I got a problem when I tried to

roslaunch openni_launch openni.launch

with kinect v1 on my ubuntu16.04

#----------------------------------------------------------------------

1. My computer environment:

ubuntu 16.04 + kinetic

OpenNI-Bin-Dev-Linux-x64-v1.5.7.10

Sensor-Bin-Linux-x64-v5.1.2.1

NITE-Bin-Dev-Linux-x64-v1.5.2.23

#----------------------------------------------------------------------

2. When I tried to roslaunch openni, I got the message as following:

... logging to /home/neo/.ros/log/75389ba0-8c86-11e8-b414-00215ce868e5/roslaunch-nuc-16200.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://nuc:46401/

SUMMARY
========

PARAMETERS
 * /camera/camera_nodelet_manager/num_worker_threads: 4
 * /camera/depth_rectify_depth/interpolation: 0
 * /camera/depth_registered_rectify_depth/interpolation: 0
 * /camera/disparity_depth/max_range: 4.0
 * /camera/disparity_depth/min_range: 0.5
 * /camera/disparity_registered_hw/max_range: 4.0
 * /camera/disparity_registered_hw/min_range: 0.5
 * /camera/disparity_registered_sw/max_range: 4.0
 * /camera/disparity_registered_sw/min_range: 0.5
 * /camera/driver/depth_camera_info_url:
 * /camera/driver/depth_frame_id: camera_depth_opti...
 * /camera/driver/depth_registration: False
 * /camera/driver/device_id: #1
 * /camera/driver/rgb_camera_info_url:
 * /camera/driver/rgb_frame_id: camera_rgb_optica...
 * /rosdistro: kinetic
 * /rosversion: 1.12.13

NODES
  /camera/
    camera_nodelet_manager (nodelet/nodelet)
    depth_metric (nodelet/nodelet)
    depth_metric_rect (nodelet/nodelet)
    depth_points (nodelet/nodelet)
    depth_rectify_depth (nodelet/nodelet)
    depth_registered_hw_metric_rect (nodelet/nodelet)
    depth_registered_rectify_depth (nodelet/nodelet)
    depth_registered_sw_metric_rect (nodelet/nodelet)
    disparity_depth (nodelet/nodelet)
    disparity_registered_hw (nodelet/nodelet)
    disparity_registered_sw (nodelet/nodelet)
    driver (nodelet/nodelet)
    ir_rectify_ir (nodelet/nodelet)
    points_xyzrgb_hw_registered (nodelet/nodelet)
    points_xyzrgb_sw_registered (nodelet/nodelet)
    register_depth_rgb (nodelet/nodelet)
    rgb_debayer (nodelet/nodelet)
    rgb_rectify_color (nodelet/nodelet)
    rgb_rectify_mono (nodelet/nodelet)
  /
    camera_base_link (tf2_ros/static_transform_publisher)
    camera_base_link1 (tf2_ros/static_transform_publisher)
    camera_base_link2 (tf2_ros/static_transform_publisher)
    camera_base_link3 (tf2_ros/static_transform_publisher)

ROS_MASTER_URI=http://localhost:11311

process[camera/camera_nodelet_manager-1]: started with pid [16217]
process[camera/driver-2]: started with pid [16218]
process[camera/rgb_debayer-3]: started with pid [16219]
process[camera/rgb_rectify_mono-4]: started with pid [16226]
process[camera/rgb_rectify_color-5]: started with pid [16233]
process[camera/ir_rectify_ir-6]: started with pid [16250]
process[camera/depth_rectify_depth-7]: started with pid [16263]
process[camera/depth_metric_rect-8]: started with pid [16279]
[ INFO] [1532140195.705105283]: Initializing nodelet with 4 worker threads.
process[camera/depth_metric-9]: started with pid [16289]
process[camera/depth_points-10]: started with pid [16304]
process[camera/register_depth_rgb-11]: started with pid [16321]
process[camera/points_xyzrgb_sw_registered-12]: started with pid [16324]
process[camera/depth_registered_sw_metric_rect-13]: started with pid [16331]
process[camera/depth_registered_rectify_depth-14]: started with pid [16343]
process[camera/points_xyzrgb_hw_registered-15]: started with pid [16353]
process[camera/depth_registered_hw_metric_rect-16]: started with pid [16371]
process[camera/depth_registered_metric-17]: started with pid [16389]
process[camera/disparity_depth-18]: started with pid [16403]
process[camera/disparity_registered_sw-19]: started with pid [16416]
process[camera/disparity_registered_hw-20]: started with pid [16441]
process[camera_base_link-21]: started with pid [16445]
process[camera_base_link1-22]: started with pid [16455]
process[camera_base_link2-23]: started with pid [16473]
process[camera_base_link3-24]: started with pid [16477]
Warning: USB events thread - failed to set priority. This might cause loss of data...
[ INFO] [1532140197.987390606]: Number devices connected: 2  
[ INFO] [1532140198.088715563]: 1. device on bus 002:08 is a SensorKinect (2ae) from PrimeSense (45e) with serial id '0'
[ INFO] [1532140198.088884278]: 2. device on bus 002:08 is a SensorV2 (2ae) from PrimeSense (45e) with serial id 'A00366902406104A'
[ INFO] [1532140198.091009069]: Searching for device with index = 1
[camera/camera_nodelet_manager-1] process has died [pid 16217, exit code -11, cmd /opt/ros/kinetic/lib/nodelet/nodelet manager __name ...