How to Fix Incorrect GPU Numbering for Laptop with Built-in Iris Xe and External RTX 3060

Introduction

This article outlines the process of fixing incorrect GPU numbering for laptops that have both an integrated Intel Iris Xe GPU (GPU 0) and an externally connected Nvidia RTX 3060 (GPU 1) via Thunderbolt. Previously, task managers displayed the incorrect name "GPU1 RTX" for the external GPU.

Understanding GPU Numbering

GPU numbering is a means of identifying graphics processing units installed in a computer system. Typically, the built-in GPU carries the number 0, while additional external GPUs receive higher numbering. However, this numbering can become incorrect.

Identifying the Issue

If your laptop has an integrated Iris Xe GPU (GPU 0) and an externally connected RTX 3060 (GPU 1), but your task manager displays the incorrect name "GPU1 RTX" for the external GPU, you'll need to follow the steps outlined below to resolve this issue.

Resolving Incorrect GPU Numbering

To fix the incorrect numbering, follow these steps:

Step 1: Check Device Connections

Ensure that your external GPU is correctly connected to your laptop using a Thunderbolt cable. Also, confirm that your laptop is set to use the external GPU by checking the Nvidia Control Panel settings.

Step 2: Update Graphics Drivers

Updating your graphics drivers to the latest version can solve the incorrect numbering issue. To do this, follow these steps:

1. Press "Win + X" and select "Device Manager".
2. Expand "Display adapters" and right-click on the Intel Iris Xe and Nvidia RTX 3060 GPUs.
3. Select "Update driver" and follow the on-screen instructions.

Step 3: Edit Registry Keys (Optional)

As a last resort, you can manually edit your registry keys:

1. Press "Win + R" and type "regedit". Click "OK" to open the Registry Editor.
2. Navigate to "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows".
3. Right-click anywhere in the right pane and select "New" > "DWORD (32-bit) Value".
4. Name the value "DevicePath". Double-click it and set it to "1".

By following these steps, you should be able to resolve the issue of incorrect GPU numbering for your laptop's built-in Iris Xe and external RTX 3060 GPUs. If the issue persists, consider reaching out to the laptop or GPU manufacturer for further assistance.

References

• Intel Iris Xe Integrated Graphics Support
• Guide and FAQ: Updating Nvidia