Problem with Installing RT-Kernel to the AGX Orin Device (itself)

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

I’m new here so sorry about any problem if I’ll do.

  • I am trying to installing RT-Kernel to the Jetson AGX Orin. I am using Jetson itself. (Not using host machine)
  • Firstly, Using-the-jetson-linux-real-time-kernel-package from this site; according to these steps I encountered a problem in step 4. When I run step 4 in terminal, it says: (Problem)

E: Unable to locate package nvidia-l4t-rt-kernel
E: Unable to locate package nvidia-l4t-rt-kernel-headers

Question

  • So, where are the “nvidia-l4t-rt-kernel” and “nvidia-l4t-rt-kernel-headers” ? There is no information about this.
2

Additionally,

I tried solution from this website and this solution does not works at all → unable-to-locate-package-nvidia-l4t-rt-kernel

4

Hi,

what L4T version are you using?
We do not offer RT kernel as a standalone debian package in recent releases anymore.
You have to follow the developer guide to build it yourself on a host PC:
https://docs.nvidia.com/jetson/archives/r35.3.1/DeveloperGuide/text/SD/Kernel/KernelCustomization.html#to-build-the-real-time-kernel

5

I am using r35.1 version. Orin came with this version.

So, you are saying that only way is building kernel and flash it?

Also, the link you attached in your reply was about 35.3.1. I think, I should follow 35.1 ?

Are the codes which I should follow to build rt-kernel(?):

$ tar -xjf public_sources.tbz2
$ cd Linux_for_Tegra/source/public
$ tar –xjf kernel_src.tbz2
$ sudo apt install build-essential bc
./kernel-5.10/scripts/rt-patch.sh apply-patches
$ mkdir kernel_out
$ ./nvbuild.sh -o $PWD/kernel_out
$kernel_out/drivers/gpu/nvgpu/nvgpu.ko
$kernel_out/arch/arm64/boot/dts/nvidia/
$kernel_out/arch/arm64/boot/Image
6

Yes.

Procedures are the same, and it’s just that these steps are only available in the newest version of documents, which is r35.3.1.

7

So, I can’t do these steps I wrote for 35.1? so in that case, what should i do for 35.1; to rt the kernel?

8

I mean, you can just follow steps listed in documents for r35.3.1, and do it on r35.1.

9

Ok. I’ll try it. Thanks. (I think; the versions are not same so processes shouldnt be the same too but it wasnt. ok.)

10

I dont know the “flashing” process. What are the terminal codes to flashing kernel to Jetson Orin? (I cant find in nvidia webpage)

Edit: Referring from → Building RT Kernel

  1. In Orin, fix the black screen. This is not required on Xavier.
    a. Flash the system into your Jetson device.
11

Hi,

please refer to our Developer Guide:
https://docs.nvidia.com/jetson/archives/r35.3.1/DeveloperGuide/text/IN/QuickStart.html#to-flash-the-jetson-developer-kit-operating-software

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14

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