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GPU Acceleration corrupts preview

New Here ,
Apr 06, 2020

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After a lengthy export job coming back to my Computer to discover that the preview was ... looking interesting to say the least (see attached screenshot). You can, if you know what the image is supposed to look like faintly detect patterns from the original image in the mess. The source files are not corrupted, Smart Previews are not used and I have cleared the Camera Raw cache.

After some trial and error I found out that disabling GPU Acceleration in settings instantly fixes the preview, and turning it back on breaks it again.

Given that GPU Acceleration worked before, I'm wondering why and how this can suddenly appear.

Restarting Lightroom does not help.

 

Lightroom Classic Release 9.2 - Camera Raw 12.2

macOS 10.15.4

Graphics: AMD Radeon Pro 5500M

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GPU Acceleration corrupts preview

New Here ,
Apr 06, 2020

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After a lengthy export job coming back to my Computer to discover that the preview was ... looking interesting to say the least (see attached screenshot). You can, if you know what the image is supposed to look like faintly detect patterns from the original image in the mess. The source files are not corrupted, Smart Previews are not used and I have cleared the Camera Raw cache.

After some trial and error I found out that disabling GPU Acceleration in settings instantly fixes the preview, and turning it back on breaks it again.

Given that GPU Acceleration worked before, I'm wondering why and how this can suddenly appear.

Restarting Lightroom does not help.

 

Lightroom Classic Release 9.2 - Camera Raw 12.2

macOS 10.15.4

Graphics: AMD Radeon Pro 5500M

Topics

Bug, Mac, Problem or error

Views

131

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Apr 06, 2020 0
Most Valuable Participant ,
Apr 06, 2020

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I assume you have a 2019 Macbook Pro 16"?  With Macs, you can't update to the latest graphics driver from the manufacturer but instead have to rely on Apple releasing an udpate. But Adobe usually does a pretty good job of coping with driver bugs in Macs, since there's a limited number of drivers to test with.

 

I recommend you post a bug report in the official Adobe feedback forum, where Adobe wants all bug reports and feature suggestions: 

https://feedback.photoshop.com/photoshop_family/categories/photoshop_family_photoshop_lightroom

 

Be sure to include the first ten lines of the menu command Help > System Info.  Provide all the details, rather than linking back to this thread -- experience shows that Adobe developers tend not follow the links.

 

[Use the reply button under the first post to ensure replies sort properly.]

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Apr 06, 2020 0
LEGEND ,
Apr 06, 2020

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In your use GPU option, when enabled, is it set to Auto, or are you forcing somthing via custom?

 

Will have to off my rear end and boot up my MAC, suspect I have some of those words wrong.

 

 

Just another Adobe customer; My Sys; APP: LRC 9.4, PS 21.2.1; CMP: WIN WS 16GB OS 10 v1909 (18363), mid 2015 MBPr 15” 16GB MACOS 10.15.6; 4K EXT DSPY; CAM: Canon 5D Mk III, Fuji X-T3

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Apr 06, 2020 0
LEGEND ,
Apr 06, 2020

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Inquiry, in LRC, if you look at System Information (/Help/System Info/) for thee GPU., Metal (Good) as opposed to OpenGL (bad)  is listed, correct?

 

https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-gpu.html

 

 

Just another Adobe customer; My Sys; APP: LRC 9.4, PS 21.2.1; CMP: WIN WS 16GB OS 10 v1909 (18363), mid 2015 MBPr 15” 16GB MACOS 10.15.6; 4K EXT DSPY; CAM: Canon 5D Mk III, Fuji X-T3

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Apr 06, 2020 0
New Here ,
Apr 18, 2020

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I have same problem , have you found solution yet ?Screen Shot 2020-04-18 at 3.47.30 pm.jpeg

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Apr 18, 2020 0