Denoise AI unknown error

[Yuval Barkai]

I get a Enhance errors:  Denoise was not applied  - there was an unknown error (1)
on every ARW file i try from my sony a7iv camera
macos - macmini 3.2 GHz 6-Core Intel Core i7

[Ian Lyons]

Strange, I just checked Denoise on a  2019 MacBook Pro with exactly the specs that you mention above. It was using LrC 12.4 I ran Denoise 5 times with Sony A7 MkIII files and repeated with 5 much more onerous Canon EOS R5 files. I monitored CPU, GPU temperatures and useage during each test, and on each occcasion the turbo CPU cores were barely active, likewise the main CPU cores. Denoise mainly uses the GPU.  Even so, the maxium CPU and GPU temperatures never exceeded 80 deg C

As a further check, I batch denoised the 5 Sony and 5 Canon files (i.e. 10 files in a single batch) with the same results as above. 

[johnrellis]

"I have a 16" MacBook Pro with AMD Radeon Pro 5500M with 4GB of GPU RAM. Intel Core-i9 8-Core, 2.3GHz, 16GB RAM running Lightroom Classic. ... waiting for the CPU temperature to cool and fall under 80'C"

The later models of Intel Macbook Pros are notorious for overheating due to clogged fan vents.  Use the free Intel Power Gadget to see if the CPU temperature is approaching 100C. If it is, then try cleaning the vents yourself or take it to a certified repair.

A correctly operating Macbook Pro will never overheat.

[mister_phil]

Thanks for the tip, I will give this a go. I've temproarily used a free tool called Turbo Boost Switcher, which also give CPU temperature, and as soon as the CPU hits 100'C the Denoise AI fails, even though it should be doing most of the heavy lifting with the GPU, which is alos likely overheating. Turning off turbo brings the temp down below 80'C so a clogged up fan might certainl be the root cause. I'll update once I've attempted. Cheers! 

[mister_phil]

I have finally found the time to open up my MacBook, and sure enough the 2 fans were clogged with dust so both the CPU and GPU were likely overheating. I didn't attempt to fully dissaseemble the fans, but simply held a vaccum cleaner over each of them until all the dust was removed. I can now use Adobe DeNoize without turning off Turbo. Very satisfying indeed. 

[Janine21844903eftn]

Had the same issue. 

Updated graphics card- no change. 

Updated Camera Raw and that fixed it for me.

[EmeritusAstro]

Thank you!  I've been trying to fix this Denoise/Enhance Error on a MBP and I'd tried everything in the threads I could find (uninstall/reinstall LRC, move disks, turn off GPU, update OS, check disk access, change the RAW compression) and nothing worked (kept getting "Denoise not applied - There was an unknown error") - but updating the Camera Raw application fixed it!

[EmeritusAstro]

...and I've just needed to repeat this (i.e. update Camera Raw) when the same error occurred using LR-Classic 14.3.