Ubuntu-base-rootfs problem

Hi, kind NVIDIA and everyone!
I downloaded the ubuntu-base-18.04.3-base-arm64.tar.gz and tested kernel module as https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide%2Fwindow_system_wayland.68.1.html%23.
And, all modprobe failed at Jetson Nano kit for any .ko file as below:
modeprobe: ERROR: could not insert ‘XXX’: Exec format error

Please tell me how to solve this problem.

Thanks,
Best Regards,
aither

This implies the modules were from the wrong architecture. They will need to be arm64/aarch64/ARMv8-a. If any of this was built on a PC, then there is a chance it is instead x86/x86_64. That or the actual module loader was the wrong architecture. I know your link says this is arm64, but I’m thinking something got mixed up during the install.