No it didn’t respond any thing
Have a check the kernel message aka dmesg after v4l2-ctl capture command.
That’s weird! Looks like the i2c communicate failed during probe have no idea it still gen the video node.
What’s the below command shows.
v4l2-ctl --stream-mmap --stream-count=100 --set-ctrl bypass_mode=0 -d /dev/video0
v4l2-ctl --stream-mmap --stream-count=100 --set-ctrl bypass_mode=0 -d /dev/video1
dmesg | tail 100
Seems it failed to find sensor on first connector, but found one on second connector. I’d suggest trying to move the camera from CSI1 to CSI0 and not connect a second camera from now.
Check if this makes a difference.
Also tell if you are using a RPi v2 IMX219 sensor or another vendor’s IMX219, and if your using a different carrier from devkit, and if any device-tree or kernel cutomization.
Does /dev/video1 the same?
Dear ShaneCCC I switched to USB camera and it worked ! Thanks for your help really much