Error during i2c read probe (-121)

Hello I got this error imx219_board_setup : error during i2c read probe (-121)… board setup failed . Is it caused by a hardware fault (I2C Bus Issue on Jetson Nano) or the camera module itself when I run this command ( nvgstcapture-1.0) My nvidia jetson nano b01 freezes and sometimes it restart ( in case of dual imx219 )depending on csi interface configurations … I just want to know if this dmesg is shown even no cameras are connected because I think I have a problem with my camera

Sorry for the late response.
Is this still an issue to support? Any result can be shared?

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hello 8ahmedhamdi,

FYI, during kernel initialization stage, it’s step for camera device registration to setup a video device node to linux kernel. sensor probing only run once during kernel initialization stage of system boot-up.
for a typical camera application running cycle, the driver will Power On the sensor, Start Sensor Streaming, sending relevant v4l2 controls, and finally power off the sensor.
so… if there’s a error returns, it’ll not register a video node, (/dev/video0).
please see-also Topic 293662 and Topic 290610 to examine camera device registration process.

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The issue was with my cameras ! the two cameras failed at the same time ! it’s weired but it was after using pca9685 with external power supply (5.2V) also I don’t think this is the reason of camera failure because I worked with the same hardware and power supply after replacing camera ! I didn’t notice before this type of error because I still got it even after replacing the camera that’s why I got confused

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