Nvidia agx orin Kernel sources compiled ，but Directory "nvgpu" is not found, exiting

[245623312]

I downloaded the relevant file packages using the SDK tool and then followed the official steps to start the operation. The link is:
https://docs.nvidia.com/jetson/archives/r35.3.1/DeveloperGuide/text/SD/Kernel/KernelCustomization.html

1. Extract the .tbz2 file:
   $ tar -xjf public_sources.tbz2
2. Extract the kernel source file:
   $ cd Linux_for_Tegra/source/public
   $ tar –xjf kernel_src.tbz2
   Question 1：：But in the second step, Linux_for_Tegra/source/public does not want to have a public directory

Building the Kernel

execute cmd: $ ./nvbuild.sh -o $HOME/kernel_output
Partial printing information is as follows：

LD [M] sound/soc/tegra/snd-soc-tegra210-dmic.ko
LD [M] sound/soc/tegra/snd-soc-tegra210-i2s.ko
LD [M] sound/soc/tegra/snd-soc-tegra210-mixer.ko
LD [M] sound/soc/tegra/snd-soc-tegra210-mvc.ko
LD [M] sound/soc/tegra/snd-soc-tegra210-ope.ko
LD [M] sound/soc/tegra/snd-soc-tegra210-sfc.ko

Kernel Image: /home/xuhaiyang/kernel_output/kernel/kernel-jammy-src/arch/arm64/boot/Image
Kernel sources compiled successfully.

make: Leaving directory ‘/home/xuhaiyang/kernel_output/kernel’
Kernel sources compiled successfully.
Directory “nvgpu” is not found, exiting…
Question 2：：
why Directory “nvgpu” is not found, exiting…???

[carolyuu]

Hi,
If the device cannot be flashed/booted, please refer to the page to get uart log from the device:
Jetson/General debug - eLinux.org
And get logs of host PC and Jetson device for reference. If you are using custom board, you can compare uart log of developer kit and custom board to get more information.
Also please check FAQs:
Jetson AGX Orin FAQ
If possible, we would suggest follow quick start in developer guide to re-flash the system:
Quick Start — NVIDIA Jetson Linux Developer Guide 1 documentation
And see if the issue still persists on a clean-flashed system.
Thanks!

[WayneWWW]

What does your source code look like after decompress?