Unreal engine on orin nano libvulkan.so.1 not found

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

Anyone try to run an Unreal engine app or game and get this unable to load vulkan library?

I went through and compiled the Vulkan-Headers and Vulkan-Loader and even did the Samples test.
I can see the libvulkan.so.1 in the $LD_LIBRARY_PATH ( I put it there ) , but I also changed that path to another location as a test.

Just doesn’t seem to make sense to me that it can’t load Vulkan.

I’m on a Jetson Nano Super 8GB dev kit.

I saw lots of posts with the AGX 32 and 64GB versions that peoeple seemed to struggle with over a year ago, I assumed it was all resolved now, but maybe not for this model.

Any ideas?

5

Hi,
We would suggest use Jetpack 6.2.1(r36.4.4) and follow the steps to set up Vulkan:

Vulkan Support on Jetson Linux | NVIDIA Developer
Vulkan SC — NVIDIA Jetson Linux Developer Guide

The steps are validated on developer kit. Please give it a try.

6

Thank you replying. I have seen this response before and followed the directions. I succesfully compiled the Vulkan-Headers and Vulkan-Loader, and verified the ENV variable $LD_LIBRARY_PATH reflects the location of the Vulkan library.

Doing ‘sudo apt-cache show nvidia-jetpack’ return below. I would say this meets the requirements suggested.

Package: nvidia-jetpack
Source: nvidia-jetpack (6.2.1)
Version: 6.2.1+b38
Architecture: arm64
Maintainer: NVIDIA Corporation
Installed-Size: 194
Depends: nvidia-jetpack-runtime (= 6.2.1+b38), nvidia-jetpack-dev (= 6.2.1+b38)
Homepage: http://developer.nvidia.com/jetson
Priority: standard
Section: metapackages
Filename: pool/main/n/nvidia-jetpack/nvidia-jetpack_6.2.1+b38_arm64.deb
Size: 29300
SHA256: dd9cb893fbe7f80d2c2348b268f17c8140b18b9dbb674fa8d79facfaa2050c53
SHA1: dc630f213f9afcb6f67c65234df7ad5c019edb9c
MD5sum: 9c8dc61bdab2b816dcc7cd253bcf6482
Description: NVIDIA Jetpack Meta Package
Description-md5: ad1462289bdbc54909ae109d1d32c0a8

Package: nvidia-jetpack
Source: nvidia-jetpack (6.2)
Version: 6.2+b77
Architecture: arm64
Maintainer: NVIDIA Corporation
Installed-Size: 194
Depends: nvidia-jetpack-runtime (= 6.2+b77), nvidia-jetpack-dev (= 6.2+b77)
Homepage: http://developer.nvidia.com/jetson
Priority: standard
Section: metapackages
Filename: pool/main/n/nvidia-jetpack/nvidia-jetpack_6.2+b77_arm64.deb
Size: 29298
SHA256: 70553d4b5a802057f9436677ef8ce255db386fd3b5d24ff2c0a8ec0e485c59cd
SHA1: 9deab64d12eef0e788471e05856c84bf2a0cf6e6
MD5sum: 4db65dc36434fe1f84176843384aee23
Description: NVIDIA Jetpack Meta Package
Description-md5: ad1462289bdbc54909ae109d1d32c0a8

Package: nvidia-jetpack
Source: nvidia-jetpack (6.1)
Version: 6.1+b123
Architecture: arm64
Maintainer: NVIDIA Corporation
Installed-Size: 194
Depends: nvidia-jetpack-runtime (= 6.1+b123), nvidia-jetpack-dev (= 6.1+b123)
Homepage: http://developer.nvidia.com/jetson
Priority: standard
Section: metapackages
Filename: pool/main/n/nvidia-jetpack/nvidia-jetpack_6.1+b123_arm64.deb
Size: 29312
SHA256: b6475a6108aeabc5b16af7c102162b7c46c36361239fef6293535d05ee2c2929
SHA1: f0984a6272c8f3a70ae14cb2ca6716b8c1a09543
MD5sum: a167745e1d88a8d7597454c8003fa9a4
Description: NVIDIA Jetpack Meta Package
Description-md5: ad1462289bdbc54909ae109d1d32c0a8

My only thought now is that maybe there is something in Unreal that is looking in a non standard location for the Vulkan library and it’s throwing that error.

Is there anything else I can confirm that would say it’s set up and ready for Vulkan Unreal application?

Does anyone have a simple demo compiled for ARM Linux they could share and I can test on my Nano?

How can I confirm the environment variable $LD_LIBRARY_PATH is what Unreal is looking for to access Vulkan?

8

Hi,
Please try ldd command and see if it shows the exact path. Or check if there’s documents from 3rdparty to give more information.

10

So I ran the ldd command, but it doesn’t return anything unless I specificy the path to libvulkan.so

Here’s what I got.

ldd /usr/local/cuda-12.6/lib64/libvulkan.so


linux-vdso.so.1 (0x0000ffff838e9000)
libc.so.6 => /lib/aarch64-linux-gnu/libc.so.6 (0x0000ffff83630000)
/lib/ld-linux-aarch64.so.1 (0x0000ffff838b0000)

So, I don’t know if that is a clue to anything, but this is a pretty fresh install, I don’t think I have any other software on this Nano.

Any else I can try, or anything I can try different?

11

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