I have a eMMC Jetson Nano (ie, not SD card model) installed in my custom carrier board. A colleague has the custom carrier board responding properly, so I suspect my issues are not related to the custom carrier board.
I have used SDK Manager to flash the system (Jetpack 4.4.1 - I am advised that Jetpack 4.5 is not suitable for the application, so I haven’t tried that yet) over the USB micro link. SDK Manager fails at the point where the SDK files are to be installed, since at that point (I believe) the SDK Manager requires “the first boot” setup which is customarily done with KVM directly on the Jetson Nano. The custom carrier board has no HDMI pins connected since the application is headless.
For the “first boot” I can see in Linux and Windows10 (lsusb and Device Manager) the L4T device.
- Linux: The ‘screen’ serial command is unresponsive. Attempts to ssh are “refused.”
- Windows: I can see COM4 instantiated with the correct VID/PID. I can see a CDC NCM USB device which has a bang for ‘no driver.’ When I try to ‘update driver’ and point Windows to the .inf on the L4T drive, Windows says there are no acceptable drivers.
In Windows, I PuTTY to COM4, but the console is unresponsive, even if I tap the space bar.
In Windows, if I PuTTY to ssh on nvidia | email@example.com the ssh connection is “refused.”
In Windows, I can ping 192.168.55.1. Regarding the Jetson Ethernet port, I can ping it no problem from Windows or Linux (got the IP address from my LAN router) - it also refuses ssh connections, which I imagine is expected since I have not yet completed the “first boot” over the micro-USB setup.
I am attaching the boot log from the UART. I note:
- failed I2C
- detects a HDMI device.
These two things seem anomalous to me. If Jetson Nano detects the HDMI device does it shutdown the serial UART setup? Is that what’s happening? Any ideas why the I2C might be “failing”? The custom board has some I2C devices, but no external pullups, so should be OK. uartbootlog.txt (43.9 KB)
On the forums, they seem to suggest I have the wrong Jetpack image. Please link me to the correct image I should be using.
Thanks in advance.