Circle and 3 sectors flickering on ground plane

Omniverse Isaac Sim
1

Isaac Sim Python 6.0.1

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Isaac Sim Version

6.1.0
6.0.1
6.0.0
5.1.0
5.0.0
4.5.0
4.2.0
4.1.0
4.0.0
4.5.0
2023.1.1
2023.1.0-hotfix.1
Other (please specify):

Operating System

Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Windows 11
Windows 10
Other (please specify):

GPU Information

  • Model: RTX 4090
  • Driver Version: 580.178.04

Strange ground plane flicker pattern

Detailed Description

I am getting this strange circle and 3 sectors, all flickering in greyscale. It is always there. Does it look familiar to anyone? I am trying to upload Video by it fails every time.

“Sorry, there was an error uploading flicker.mp4. Please try again.”

Steps to Reproduce

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Error Messages

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Screenshots or Videos

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Additional Information

What I’ve Tried

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Related Issues

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Additional Context

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3

Hi, can you try Isaac Sim 6.2 release which was just released last week?
If you still have the same issue, please share your repro steps or scripts so we can check further.

4

Will do. In the meantime - is there some file type restriction preventing me from uploading a video? Or size limitation? Tried MP4 and MOV, both fail with a non-descript upload error.

5

6.2 did not help, same exact issue.

6

[CLAUDE] found the cause of the flashing floor and fixed it in our world.

Cause: the stock Jackal asset (jackal.usd) contains a built-in RTX lidar. Deactivating only that one prim stops the flicker.

It only flickers when three things are true at once: a physics scene exists, the stock Jackal is loaded, and the timeline is playing. Remove any one of those and it’s clean.
Isaac Sim 6.2 behaves the same as 6.0.1, which is why the upgrade didn’t help.
In the minimal scene, changed pixels went from 1–2% to exactly 0.0000. In our full world they went from 0.8% to 0.01%.
State: the fix is in isaac_world.py, and the arm stack is restarted on 6.0.1 with the fix. The arm’s ETX bridge is reconnected. Fleet Control is still paused. Please check the Isaac window yourself and confirm the floor is clean.

7

I don’t think there’s such limitation. If it keeps failing for you in the future, you can upload the video to your preferred storage and share the link of it in your report.

Glad to know your issue is fixed. Let us know if there’s any other help needed.