Jetson Nano USB device mode confusion

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hi,

my first experiences with the Nano started in late December last year. That time I downloaded the only available preconfigured SD card image, which - if I remember correctly - was made with JetPack 4.4.

That time I started with a headless installation and had no problem to do the initial configuration using the micro USB serial connection. Later I plugged keyboard, mouse and monitor and all was fine.

Since I power supply the box from a barrel plug I had the micro USB port free and was quickly able to write me a REST API server and some host code, which communicated via the USB cable using IP 192.168.55.xx (I remember the Nano had the .1, my PC the .12 or so)…

Meanwhile I ran into some troubles which forced me to re-flash the SD. Now the downloadable image is containing JP 4.5 (jetson-nano-jp45-sd-card-image.zip) with which my DeepStream app had a problem (segmentation fault with one of the Python samples)

So I downloaded an earlier image (jetson-nano-sd-card-image-441.zip) from Jetson Download Center | NVIDIA Developer

My app did work again, but I was surprised: The USB device mode did not work out of the box as it did before.

What do I have to do in order to enable it again?

2

Disregard. I must have used the wrong cable or port… Works

3

Glad to know issue resolved. Thanks for the update!

4

Hmm. No. It is what it is with literally all software running on this box: It runs generally, but then out of the sudden it stops working. And you are resetting, changing cables, rebooting everything - nothing works.

But maybe tomorrow, you didn’t change anything, it will work again, out of the sudden.

I’m so p…d with this device…