Important: Isaac Sim support
5.1.0
Operating System
Windows 11
GPU Information
- Model: NVIDIA GeForce RTX 4050 Laptop
- Driver Version: 595.97 -->581.42–>596.49 + CUDA12.8
Topic Description
Detailed Description
(Describe the issue in detail, including what you were trying to do, what you expected to happen, and what actually happened)
I have retried to reinstall isaacsim+isaaclab by pip and reinstall my driver dozens of times, but it just can’t compile compute shader and the 3D model can’t loading.
every time it shows same errors, but headless mode is OK
Error Messages
(RL) PS C:\WINDOWS\system32> isaacsim --/rtx/verifyDriverVersion/enabled=false
2026-05-18T05:09:39Z [1,439ms] [Error] [carb.graphics-vulkan.plugin] Flags 0x6 must be the same for both device and instance.
2026-05-18T05:09:39Z [1,528ms] [Error] [carb.graphics-vulkan.plugin] Flags 0x6 must be the same for both device and instance.
2026-05-18T05:09:39Z [2,086ms] [Error] [gpu.foundation.plugin] Cannot load shader file ‘rtx/system/GenerateMipMap.comp.hlsl’.
2026-05-18T05:09:39Z [2,086ms] [Error] [gpu.foundation.plugin] buildShaderAsync() failed: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,086ms] [Error] [gpu.foundation.plugin] Failed to async compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,087ms] [Error] [gpu.foundation.plugin] Failed to compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,087ms] [Error] [gpu.foundation.plugin] Failed to compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,088ms] [Error] [gpu.foundation.plugin] Failed to compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,088ms] [Error] [gpu.foundation.plugin] Failed to compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,088ms] [Error] [gpu.foundation.plugin] Failed to compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,088ms] [Error] [gpu.foundation.plugin] Failed to compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,088ms] [Error] [gpu.foundation.plugin] Failed to compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
2026-05-18T05:09:39Z [2,089ms] [Error] [gpu.foundation.plugin] Failed to compile compute shader: rtx/system/GenerateMipMap.comp.hlsl
@3146443841 The errors you’re seeing point to two things:
1. Vulkan dual-adapter conflict (the Flags 0x6 error)
This is a known issue on Windows laptops where Vulkan enumerates both the NVIDIA discrete GPU and the integrated GPU (Intel or AMD). The flag mismatch between the two adapters causes the shader compilation pipeline to fail. Since headless mode bypasses the rendering pipeline, it works fine.
Workaround: Disable the integrated GPU in Device Manager (or in your BIOS settings) so only the NVIDIA RTX 4050 is visible. Alternatively, you can try switching Isaac Sim to DirectX rendering instead of Vulkan.
2. GPU below minimum spec
Isaac Sim 5.1.0 requires a minimum GPU of RTX 4080 with 16GB VRAM. The RTX 4050 Laptop has 8GB VRAM, which is below the supported minimum. Even after resolving the Vulkan issue, you may encounter rendering limitations or out-of-memory issues with larger scenes.
For reference, a similar dual-adapter Vulkan issue was discussed in this topic.
If the workaround above doesn’t help, could you share the full Kit log file? It would be at C:\Users\<username>\.nvidia-omniverse\logs\Kit\Isaac-Sim Full\5.1\.
@VickNV
I think it might be a problem that it shows 2 GPU :
|---------------------------------------------------------------------------------------------|
| Driver Version: 581.42 | Graphics API: Vulkan
|=============================================================================================|
| GPU | Name | Active | LDA | GPU Memory | Vendor-ID | LUID |
| | | | | | Device-ID | UUID |
| | | | | | Bus-ID | |
|---------------------------------------------------------------------------------------------|
| 0 | NVIDIA GeForce RTX 4050 Laptop.. | Yes: 0 | | 5921 MB | 10de | 9f280100.. |
| | | | | | 28e1 | 846fd49d.. |
| | | | | | 1 | |
|---------------------------------------------------------------------------------------------|
| 1 | Microsoft Direct3D12 (NVIDIA G.. | Yes: 1 | | 5921 MB | 10de | 9f280100.. |
| | | | | | 28e1 | 66e35397.. |
| | | | | | N/A | |
|=============================================================================================|
| OS: Windows 11 Pro, Version: 10.0 (25H2), Build: 26200, Kernel: 10.0.26100.8457
| Processor: 13th Gen Intel(R) Core™ i7-13700H
| Cores: 14 | Logical Cores: 20
|---------------------------------------------------------------------------------------------|
| Total Memory (MB): 16008 | Free Memory: 7024
| Total Page/Swap (MB): 27468 | Free Page/Swap: 15629
|---------------------------------------------------------------------------------------------|
And I dont know how to disable DX12 GPU, can you tell me how to make it ?
here are the full log:
kit_20260518_141439.log (1.6 MB)
@3146443841 to disable the built in Microsoft driver, you should go into Device Manager (Windows key + X or go to start menu and search for device manager) and look for Display adapters in the list:
Expand the entry and locate the integrated driver. Right click on it then choose to Disable Device:
The goal is to only have the NVIDIA driver running.
@Simplychenable @VickNV
unfortunatly, I tried to disable it by device manager but the DX12 GPU still there, and the DX12 GPU isn’t in the list. Is there any other method to solve it?
Is there anyone can help ?
As said, there are two things you need to do.
- You need to HARD disable the video card either in the BIOS or the Device Manager. If the card was disabled, there is no way it could show up in this CMD Print. It would not be there.
- You need to run Isaac Sim with the “vulkan=false” flag in your main kit file, to force it into DIRECT3D mode. Find the Isaac Sim kit file, open it in notepad, find the “vulkan=true” line and change it to “vulkan=false”
Thanks for your help, now the problem is solved by following step2 to change the file “isaacsim.exp.full.kit”.
It seems that the Vulkan dual-adapter conflict still a issue in Win11, maybe it should be fixed in next stable version.
Anyway thanks for your support!
