Xavier with ubuntu16.04?

As in the link https://developer.nvidia.com/embedded/jetpack

  1. JetPack 4.1.1 is the official package but only support ubuntu18.04
  2. JetPack 3.3 support ubuntu16.04 but only for Jetson TX2 and Jetson TX1

Is there any JetPack support both Jetson Xavier and ubuntu16.04?

JetPack for Xavier starts with Ubuntu 18.04, so there is no 16.04 available. I am guessing you need CUDA 9 (the reason most people ask this question since the current support is only for CUDA 10).

Thank you for your attention,

In fact, I want to transfer my working environment from Jetson TX2 to Xavier.

As the link said https://devtalk.nvidia.com/default/topic/1008974/jetson-tx2/is-there-any-real-time-os-for-jetson-/post/5293514/#5293514 ,some real time application that controlling robot already run successfully on Jetson TX2.

So I think it would be easier to transfer if there were JetPack starts with Ubuntu 16.04 for Xavier.

Hi williamac, in the next release of JetPack, Jetson TX2 will be moving to Ubuntu 18.04 as well.

Some forum members have actually already found an unofficial way to get 18.04 on TX2, see here:

That isn’t to say that someone in the community couldn’t backport 16.04 to Xavier, but going forward the officially supported reference OS in JetPack will be the 18.04 version.

Hi dusty_nv,

It is a good news to have 18.04 on TX2.

However, it is not a solution for me.

The reason is that,

I had successfully run my real time application on TX2 according to the https://github.com/kozyilmaz/nvidia-jetson-rt ,which is a necessary part for IgH Ethercat Master http://etherlab.org/en/ethercat/.

But I failed to install a real time system on Xavier, since the Jetpack is higher than TX2.

So I want to rollback Xavier to 16.04. And a TX2 with 18.04 wouldn’t help me to solve this, right?

Or let’s change a question, is there any method to install a real time system on Xavier as https://github.com/kozyilmaz/nvidia-jetson-rt for TX2?

Thank you.

That GitHub repo seems to be tested on a specific version of L4T (R28.1) for TX2, which is behind the latest version of TX2 (R28.2.1). It does not seem to depend on Ubuntu 16.04 or 18.04, as it is related to patching the kernel. Regardless the L4T version is currently newer with Xavier (R31.1).

Here are some forum threads about Preempt-RT patch on Xavier, which seems to have been installed:

You can also contact Concurrent Realtime to inquire about their plans for realtime Linux kernel on Xavier.


In fact, one of that two links were posted by my colleague, and the problem is not solved yet.

Preempt-RT will be the first choice since my applications were developed on it.

I will have a try about Concurrent Realtime anyway.

Hello williamac,

Concurrent Real-Time has recently released RedHawk Linux for NVIDIA Jetson AGX Xavier. RedHawk Linux is a real-time operating system. RedHawk provides guaranteed response time of less than 50 microseconds on AGX Xavier.

The press release:

Please feel free to PM me if you need more information.