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SK-TDA4VM: camera error occured when open a new terminal window

chenglei yang
Prodigy 150 points
Part Number: SK-TDA4VM

Tool/software:

Hi, expert:

    My camera is works normally when I only open one ssh window. But problem occured when I open the second ssh window. My steps are the followings:

    (1) Open first ssh window and using "v4l2-ctl -d /dev/video-imx390-cam0 " command to capture data, the screen is as the following:

  (2) During capturing data using v4l2,  I opened another ssh window,  and "VIDIOC_SUBDEV_S_ROUTING failed: -16" occured:

My conclusion: It seems that each time ssh terminal window is opened,  /dev/video-imx390-cam0 is called by some application,  which result in "VIDIOC_SUBDEV_S_ROUTING failed: -16", because I can see "csi2rx_set_routing" is called in the linux kernel log each time.

Are there really some bash scripts automatically run when open new ssh window, and detecting /dev/video-imx390-cam0?  If there are, which application is it?  How to fix the problem?

Thanks a lot.