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airvolute / dcs-deploy

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Jetpack 5.1 deployment on Board 1.2 with Xavier #6

Closed PavelGuzenfeld closed 1 year ago

PavelGuzenfeld commented 1 year ago

I have a problem with Aivolute 1.2 board Jetson Xavier device. After installing the jetpack according with the guide on two Board instanced then, I've connected 2 ,similar model USB cameras to each jetson. When I've checked the connected devices with ls /dev/ , In one Jetson instance, there are 2 /dev/video0 and /dev/video1 as there should be, but one of them does not work. On another Jetson instance, there are 4 /dev/video devices and video0 and video2 the video worked. Kindly advise.

jRodina commented 1 year ago

Could you give us more details regarding HW connections, what type of cameras, used drivers, etc?

PavelGuzenfeld commented 1 year ago

Yes, they are connected to random 2 USB ports. Nothing special. Also, same cameras worked on as expected (2 devices instead of four) on Airvolute 1.0 with Xavier jetpack 4.6. I think it would be reproducible with any USB cameras, no special drivers, just Plug and play.

jRodina commented 1 year ago

It is native Linux behavior to have two video devices for one physical USB camera. In your case, most probably, /dev/video0 gives you a video stream, and /dev/video1 some camera metadata. It has nothing to do with our BSP etc. There is a big difference between JP4.6 and JP5.1 due to the different versions of the kernel (Ubuntu 18.04 vs Ubuntu 20.04). Also, it is common to have USB cameras that are not plug-and-play, and you must install drivers for them (Ximea, for instance). It is good to check behavior against other Ubuntu computers. If you think it is some HW issue, please include a photo of your setup and dmesg output to see if devices are enumerated correctly.

PavelGuzenfeld commented 1 year ago

Thank you for our explanation and support.