Hi all, I’ve recently built a custom L4T RT image starting from jetson_36.4 sources (./source_sync.sh -k -t jetson_36.4) and Jetpack Jetson_Linux_R36.4.0_aarch64.tbz2 and Tegra_Linux_Sample-Root-Filesystem_R36.4.0_aarch64.tbz2. I followed Kernel Customization — NVIDIA Jetson Linux Developer Guide…

Hi, These are the default kernel: nvidia-l4t-display-kernel nvidia-l4t-kernel nvidia-l4t-kernel-dtbs nvidia-l4t-kernel-headers nvidia-l4t-kernel-oot-headers nvidia-l4t-kernel-oot-modules Would be great if you can mark these for a try.

Hi, The guidance shows steps for upgrading from 36.3 to r36.4. And r36.4.3 is later version of r36.4. If you run $ sudo apt update, the later version will be shown. To stay on r36.4, please have a script like: OpenGL issue after install nvidia-jetpack via apt-get - #17 by DaneLLL Compiz high loa…

Hi @DaneLLL , The working version IS already installed. 36.4.0-20240912212859 nvidia@nvidia-orin-rt:~$ sudo apt search nvidia-l4t-jetson-multimedia-api [sudo] password for nvidia: Sorting… Done Full Text Search… Done nvidia-l4t-jetson-multimedia-api/stable 36.4.3-20250107174145 arm64 [upgradab…

I’ll tell you more. If I leave the sudo apt upgrade to update the kernel, the following boot will select 5.15.148-tegra NOT realtime. Even following Kernel Customization — NVIDIA Jetson Linux Developer Guide 1 documentation next, the RT packages are related the old version 5.15.148-rt-tegra-36.4.0…

Hi, Not understand this part and would like to get more information. If you have flashed the device with your self-built RT kernel, why do you run the command: nvidia@nvidia-orin-rt:~$ sudo apt install nvidia-l4t-rt-kernel nvidia-l4t-rt-kernel-headers nvidia-l4t-rt-kernel-oot-modules nvidia-l4t-di…

Sure @DaneLLL I initially flashed a self-built RT kernel (generic_rt_build.sh "enable") with 6.1 sources and custom carrier board’s drivers and my customization. Unfortunately, after upgrading the packages, the orin NX boots into a non-rt kernel. I’m not sure if my old kernel is overwritten or wha…

Hi, We would like to set up developer kit and replicate the issue. Please check if the steps are correct: Flash developer kit to RT kernel Boot the system and run $ sudo apt update Reboot the system. After booting up, the system becomes non-RT kernel

Almost correct. Flash devkit with a RT kernel syncing the sources from jetson_36.4 and using Jetson_Linux_R36.4.0 zip archives. (In my case I’m using a Seeedstudio carrier board but the issue shall be in the devkit as well). Boot the system and run sudo apt update && sudo apt upgrade Reboot the s…

Hi, It looks like running sudo apt upgrade may not be required. Any reason for this?

How so? There’s no issue if you don’t upgrade the packages. It keeps the correct kernel Image and version (5.15.148-rt-tegra-36.4.0-20241014173246) As reported here , the issue starts with the upgrade of the following packages: nvidia@nvidia-orin-rt:~$ sudo apt upgrade Reading package lists… Done …

Apt-upgrade uploads nvidia-l4t-kernel

Robotics & Edge Computing Jetson Systems Jetson Orin NX

Gorgo90 January 28, 2025, 11:32am 9

I recently found another topic on Orin AGX where they faced the same issue: JetPack6.1 auto upgrade
Unfortunately there’s no solution even there

Topic		Replies	Views
Jetson Orin NX Industrial J4012 apt upgrade problem Jetson Orin NX reflash	5	556	July 8, 2025
Jetson NX upgrade from JP5.1 to JP5.1.2 Jetson Orin NX reflash	14	1441	February 2, 2024
Upgrade Jetpack from 6.0 to 6.1 on Orin NX Fails Jetson Orin NX apt_upgrade	6	364	January 24, 2025
Procedure for A_kernel update FAILED - 5.1 to 5.1.1 Jetson Orin NX reflash	15	2137	April 28, 2023
Apt upgrade Jetson Orin Nano apt_upgrade	7	571	July 3, 2024
Unable to locate package nvidia-jetpack on Orin devkit Jetson AGX Orin reflash , nvbugs	30	14240	May 11, 2022
After updating nvidia-l4t-jetson-multimedia-api on JetPack 4.4.0, X11 won't start Jetson Xavier NX boot , nvbugs	16	3576	January 8, 2021
Jetpack installation affects the system version Jetson Thor jetpack	34	927	December 17, 2025
JetPack6.1 auto upgrade Jetson AGX Orin jetpack	31	1213	January 23, 2025
Unable to install jetpack on Orin devkit p3710 Jetson AGX Orin reflash	3	954	April 17, 2023

Apt-upgrade uploads nvidia-l4t-kernel

Related topics