I am running a Jetson Nano A02 board with jetpack 4.6.1. I found two USB ports of J32 (near the HDMI) not working. Two ports of J33 works fine. To be clear, I just tested with USB2 mouse and keyboard because I don’t have USB3 devices at hand. And I use uUSB power.
I follow some existing topics to check dmesg. When I plugin or plugout a device to J32, nothing is recorded in dmesg. But message appears when I do the same thing for J33. Sometimes there are “over-current” warnings in dmesg, but they are for device pluged to J33.
I tried to measure the voltage of J32 and J33, both give 4.7 voltages. The voltage of D+/D- and the resistance from D+/D- to ground are almost the same for J32/J33 (hundreds of ohms). And from appearance, there is no visual damage on the board.
I would like to figure out what is the problem and try to solve it if possible. Would you please give me some instructions? Thank you!