Hello, our company uses the Jetson-Thor Developer Kit with a Type-C port connected to a USB hub to expand two web cameras. Every time the Thor is powered on again, the Type-C-extended camera cannot be seen in /dev/video*. For one Thor, it only works after being plugged in and out again. For another …

Hi, By default the port runs in device mode. This is a quick way to enable it as host mode. If you need a full-function type-c port, would need to follow design guide to design a custom board.

Hi, Do you use Jetpack 7.1 and observe the issue? And please try the type-A ports. Would like to know if it is specific to the type-C port + hub, or also occurs when connecting the cameras to type-A ports.

Yes, it has been updated to the latest version 7.1. The type-A port is normal. The type-C port is using the one on the side. If I switch to the one in the middle, all three devices fail to recognize it.

I once had a lot of trouble with a usb camera. It turned out to be that usbguard.service and usbguard-dbus.service had locked down the ability to have system talk to the camera. If you’ve usbguard installed, a test would be to “sudo systemctl stop usbguard usbguard-dbus” and see if the issue is reso…

I performed the following operations based on the reference: dtc -I dtb -O dts -o /tmp/tmp.dts /boot/dtb/kernel_tegra264-p4071-0000+p3834-0008-nv.dtb Then, modify the following content of tmp.dts: ports { usb2-0 { mode = “peripheral”; usb-role-switch; role-switch-default-mode = “peripheral”; …

I haven’t installed usbguard.And the USB Hub with Type-C inserted cannot be recognized, so the extension cannot connect to the webcam. And my USB Hub is work on other computer.

Hi, Please check device tree and see if the configuration is applied: nvidia@tegra-ubuntu:~$ ls /proc/device-tree/bus@0/padctl@a808680000/ports/usb2-0 nvidia@tegra-ubuntu:~$ xxd /proc/device-tree/bus@0/padctl@a808680000/ports/usb2-0/mode

ubuntu@localhost:/$ ls /proc/device-tree/bus@0/padctl@a808680000/ports/usb2-0 mode name status ubuntu@localhost:/$ xxd /proc/device-tree/bus@0/padctl@a808680000/ports/usb2-0/mode 00000000: 686f 7374 00 host.

Hi, We can run it successfully on AGX Thor developer kit: [ 656.820065] usb 2-2: new SuperSpeed USB device number 3 using tegra-xusb [ 656.849198] hub 2-2:1.0: USB hub found [ 656.849909] hub 2-2:1.0: 4 ports detected [ 656.967523] usb 1-1: new high-speed USB device number 10 using tegra-xusb …

Yes,I try both 5a and 5b port it not work in this Thor. By the way, as previously described, before modifying the device tree, two Thor could recognize Type-C, both 5b ports worked, but 5a port never worked.

Jetson Thor Type‑C Video Issue – Beijing

Robotics & Edge Computing Jetson Systems Jetson Thor

DaneLLL March 11, 2026, 9:03am 7

Hi,
Please refer to
Using 3 USB 2.0 cameras with a Jetson Thor - #3 by DaneLLL

The type-C port on AGX Thor developer kit is in device mode by default. Please modify device tree to run in host mode.

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Jetson Thor Type‑C Video Issue – Beijing

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