Was going through this course S3E3 Training classification models, Jetson AI Fundamentals - S3E3 - Training Image Classification Models - YouTube, I was running headless and I downloaded the images and went to run the docker command which I got an error saying I did not have account permissions. I couldn’t even shutdown the nano so I manually unplugged it, after plugging it back in it will no longer boot up.
No camera is connected , using an HDMI cable and no longer trying to run headless. All these models took a long time to download so I hope the solution is not to reflash the unit,
If you can see the text showing up on the monitor but the UART serial cannot give you info, then it is most likely some setup error on your side for that serial. This serial console can dump log in almost every case except recovery mode and no power status.
Try to open the console before you power up the board. This log is realtime, it cannot trace back if you didn’t catch it. I mean if the log already done printing before you open the console, then you are not able to see any log.