AI Denoise fails to run in Lightroom Classic

[Luke4827]

When I go to use the AI Denoise function, the preview window just has a grey screen instead of showing the image with denoise applied. After I click enhance, Lightroom Classic says there has been an unknown error and denoise could not be applied. The next screen says that there has been a GPU error. I've successfully used the denoise feature once before (a few days ago), so not sure what could have changed to cause the problem. It appears to be similar to this post, but I do not have a Nvidia GPU. 

Lightroom Classic version: 13.4 [ 202406181129-60d181b7 ]

License: Creative Cloud

Language setting: en

Operating system: Windows 10 - Home Premium Edition

Version: 10.0.19045

Application architecture: x64

System architecture: x64

Logical processor count: 8

Processor speed: 1.8GHz

SqLite Version: 3.36.0

CPU Utilisation: 5.0%

Power Source: Plugged In, 17% (Low) (Charging)

Built-in memory: 8039.2 MB

Dedicated GPU memory used by Lightroom: 969.6MB / 128.0MB (757%)

Real memory available to Lightroom: 8039.2 MB

Real memory used by Lightroom: 1665.0 MB (20.7%)

Virtual memory used by Lightroom: 3581.5 MB

GDI objects count: 772

USER objects count: 2404

Process handles count: 1911

Memory cache size: 545.2MB

Internal Camera Raw version: 16.4 [ 1897 ]

Maximum thread count used by Camera Raw: 5

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 861MB / 4019MB (21%)

Camera Raw real memory: 704MB / 8039MB (8%)

Cache1: 

Preview1- RAM:21.0MB, VRAM:0.0MB, IMG_8267.CR3

Preview2- RAM:21.0MB, VRAM:0.0MB, IMG_8273.CR3

Preview3- RAM:22.0MB, VRAM:0.0MB, IMG_8269.CR3

Final4- RAM:189.0MB, VRAM:0.0MB, IMG_8272.CR3

Preview5- RAM:22.0MB, VRAM:0.0MB, IMG_8268.CR3

Preview6- RAM:21.0MB, VRAM:0.0MB, IMG_8274.CR3

NT- RAM:296.0MB, VRAM:0.0MB, Combined:296.0MB

Cache2: 

m:545.2MB, n:297.6MB

U-main: 89.0MB

System DPI setting: 120 DPI

Desktop composition enabled: Yes

Standard Preview Size: 1920 pixels

Displays: 1) 1920x1080

Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info: 

DirectX: Intel(R) UHD Graphics 620 (26.20.100.6911)

Init State: GPU disconnected

User Preference: Auto

[dj_paige]

Your GPU, Intel UHD Graphics 620, is now 7 years old, and likely not powerful enough to perform AI Denoise. I know you said it worked once, but if I were you I would have low expectations of this GPU, and you should strongly consider getting a more modern GPU.

[Luke4827]

Unfortunately, a new GPU is not an option for me without a whole new machine, as the GPU in my laptop isn't replaceable. If the GPU isn't not powerful enough to perform AI Denoise, any ideas as to why it was able to once before failing?

[dj_paige]

No. I'm surprised it worked once. But maybe its capabilities make it "borderline" for performing AI Denoise, sometimes it works and sometimes it doesn't.