xv lidar on pi and doing remote slam

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Hi,

I have xv lidar running on Raspberry pi. roscore also runs on pi. on pi, xv lidar will collect its raw data and publish as /scan node. On my remote computer, I am able to echo the /scan topic. I attempted to run roslaunch hector_slam_launch neato.launch. the rviz GUI appears. but the error msg on command line is "SearchDir angle change too large". My lidar is stationary.

Is this concept doable? if i were to run xv lidar on my remote computer, all is well. There is no error msg.

Thank you.