USD Composer crashes when "AR Start" button is clicked on Windows 11 Pro

Omniverse General Discussion
1

I enabled the “AR” option from “Windows → Rendering” and USD Composer crashes when I click on “AR Start” button.

What is the minimum RTX version to run the AR feature in Omniverse?

Thanks,
Nandu
crash_2024-01-11_14-43-34_27412.txt (5.5 KB)
639f9294-6060-4986-8021-9f21aba8e344.py.txt (64 Bytes)

2

@user91403 i am just another OV user, but i cannot seem to repro the crash on my end (i tested with 2023.2.2) when attempting to access Window > Rendering > AR . it does take a few seconds for the AR panel to show up (next to the property panel).

is it possible to upload the most recent log file as an attachment? you can find it here:

%userprofile%\.nvidia-omniverse\logs\Kit\USD.Composer\2023.2

based on what i saw in your crash log, you seem to be using a RTX 2070. it might be a bottleneck, but we should evaluate the actual Composer log after you’ve uploaded it to confirm it’s not related to the app. in the interim, you can take a look at the technical requirement for Composer:

https://docs.omniverse.nvidia.com/composer/latest/common/technical-requirements.html

3

Thanks @Simplechenable for your help. I was able to resolve the error, it was not finding OpenXR on local machine. I had to re-install OpenXR.

Thanks,
Nandu

1 Like
4

How can I install OpenXR, or check if I have it installed?

5

This is a very old post, but I’ll try to answer the question here.

First of all, you shouldn’t have to install anything. Open XR is a standard that we build into kit. If you’re using steam, it should automatically attached to open XR. I’ve never heard of anybody needing to actually install it separately. What headset are you using?

To Install OpenXR Runtime:

Option 1: Install via Microsoft Store

• Install the OpenXR Developer Tools for Windows Mixed Reality from the Microsoft Store:

• OpenXR Tools on Microsoft Store

Option 2: Platform-Specific Runtimes

• SteamVR:

• Just install SteamVR. It includes its own OpenXR runtime.

• You may need to manually set it as the active runtime via its Developer Settings.

• Oculus/Meta:

• Install the Oculus app.

• Go to Settings > General, and enable “Set Oculus as active OpenXR Runtime.”

• Windows Mixed Reality:

• Install Mixed Reality Portal from Microsoft Store.

• Open it, and it usually auto-registers its OpenXR runtime.

6

I’m using the Magic Leap 2. When I’m in Remote Rendering mode on the headset and waiting for the host pc to launch an XR app if I try to “Start AR” on the AR EXPERIENCE it crashes USD Composer. If I have a demo given by magic leap to verify if remote rendering is working running and then “Start AR” it doesn’t crash but instead gives an error saying that it failed to activate OpenXR.

7

OK I am not honestly sure that we even work with magic Leap. I will have to check. Have you used this headset with other applications before? I mean, not with just a magic leap demo?

8

Well, then try to install open XR and see what happens

9

The behavior persists.

10

kit_20250508_144210.log (1.8 MB)

11

Rather than using the AR, which is really designed for tablets, can you use the VR mode?

12

If I select CloudXR as the ouput it starts VR but can´t connect to the headset, which makes sense since the device is waiting for an OpenXR app from the host pc. If I select OpenXR the same error occurs, USD Composer crashes. Moments before this crash, the headset’s waiting message disapears and after the crash it comes back.

13

I have checked with the engineers and they have said that we support all headset that support OpenXR. If that is the case with ML2, which it is, then this should work fine.

Did you read through this guide? OpenXR Connection steps - OpenXR - Magic Leap 2 Developer Forums

According to the log you are using a really old version of Composer, 2023.2.5. This is running on Launcher, which is now legacy. We do not recommend using it any more.

For the new Kit versions, you have to use our “kit app template”. You have to do a small amount of building to use it, because we are moving to a developer focus, but it is easy.

Follow these instructions:

1. Download "git" from https://git-scm.com/downloads
2. Download "git Large File Storage from https://git-lfs.com/
3. Start a windows command console by using running "cmd" from the Windows Start menu
4. Navigate to the root of c: or d: drive. Example "cd\"
5. Copy and run "git clone https://github.com/NVIDIA-Omniverse/kit-app-template.git"
6. run "cd kit-app-template"
7. run "repo template new"
8. run "repo build"
9. run "repo launch"
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