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m_1775
m_1775
Inspiring
March 2, 2026
Answered

Lightroom classic denoise isn't working on Apple M1

  • March 2, 2026
  • 3 replies
  • 102 views

Hello, unfortunately I am unable to denoise photos using Lightroom Classic on Macbook Air M1. When I click denoise, progress bar shows and then after a few seconds(progress bar is in aroud 1/4) is disappears. Then efter clicking denoise it instantly unclicks. Reinstalling lightroom didn’t help. I don’t see any errors in logs(Lightroom started from command line). 

 

System info:

Lightroom Classic version: 15.2 [ 202602111402-ec4112e8 ]
License: Creative Cloud
Language setting: en-GB
Operating system: Mac OS 26
Version: 26.3.0 [25D125]
Application architecture: arm64
Logical processor count: 8
Processor speed: NA
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.171

Power Source: Plugged In, 36%, Charging
Built-in memory: 16 384,0 MB
Dedicated GPU memory used by Lightroom: 4 738,9MB / 12 124,1MB (39%)
Real memory available to Lightroom: 16 384,0 MB
Real memory used by Lightroom: 1 133,0 MB (6,9%)
Virtual memory used by Lightroom: 428 481,9 MB
Memory cache size: 145,4MB
Internal Camera Raw version: 18.2 [ 2482 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 587MB / 8191MB (7%)
Camera Raw real memory: 666MB / 16384MB (4%)

Cache1: 
Final1- RAM:549,0MB, VRAM:3 959,0MB, DSC04899.ARW
NT- RAM:549,0MB, VRAM:3 959,0MB, Combined:4 508,0MB

Cache2: 
m:145,4MB, n:189,1MB

U-main: 76,0MB

Standard Preview Size: 2880 pixels
Displays: 1) 2880x1800

Graphics Processor Info: 
Metal: Apple M1
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF
GPU for Preview Generation: Auto (S5_11)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/michal/Pictures/Lightroom/Lightroom Catalog.lrcat
Settings Folder: /Users/michal/Library/Application Support/Adobe/Lightroom

Installed Plugins: 
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr

Config.lua flags:



 

 

 

 

Logs:

 MacOS ./Adobe\ Lightroom\ Classic
objc[30751]: Class SODSFileDecode is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/WichitaFoundation.agtoolkit/Versions/A/WichitaFoundation (0x107e11520) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/CameraRaw.lrtoolkit/Versions/A/CameraRaw (0x13807c030). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class _GPUOperator is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/WichitaFoundation.agtoolkit/Versions/A/WichitaFoundation (0x107e11598) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/CameraRaw.lrtoolkit/Versions/A/CameraRaw (0x13807c0a8). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class _CPUOperator is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/WichitaFoundation.agtoolkit/Versions/A/WichitaFoundation (0x107e115e8) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/CameraRaw.lrtoolkit/Versions/A/CameraRaw (0x13807c0f8). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
[0302/193527.448117:WARNING:policy_logger.cc(148)] :components/enterprise/browser/controller/chrome_browser_cloud_management_controller.cc(88) Could not create policy manager as CBCM is not enabled.
2026-03-02 19:35:27.497 Adobe Lightroom Classic[30751:842539] NGL Resource Path:
2026-03-02 19:35:27.497 Adobe Lightroom Classic[30751:842539] /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Resources/nglresource/resources
objc[30751]: Class GUDEAsyncToken is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510b800) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e2ff8). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class MacGUDEUtils is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510b850) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e3048). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class PlatformFileOStream is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510b8a0) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e3098). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class GUDERequestCFNetwork is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510b8f0) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e30e8). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class ChunkInputStreamFactory is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510b940) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e3138). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class SeekableInputStream is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510b9b8) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e31b0). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class GUDERequest is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510ba08) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e3200). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class GUDERequestNSURL is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510ba30) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e3228). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
objc[30751]: Class HttpSession is implemented in both /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/MacOS/Adobe Lightroom Classic (0x10510ba80) and /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/PlugIns/AdobeHeadlights.lrmodule/Contents/MacOS/AdobeHeadlights (0x12c8e3278). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
DUNAMIS SessionID: 8e30d539-1184-43a5-bf01-a13ab4ce75c7
2026-03-02 19:35:29.264 Adobe Lightroom Classic[30751:842690] CoreText failed to get font asset: 0 - (null)
_LSOpenURLsWithCompletionHandler() failed for the application /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/AdobeCrashReporter.framework/Versions/A/Adobe Crash Processor.app/Contents/MacOS/Adobe Crash Processor with error -1712.
_LSOpenURLsWithCompletionHandler() failed for the application /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/AdobeCrashReporter.framework/Versions/A/Adobe Crash Processor.app/Contents/MacOS/Adobe Crash Processor with error -1712.
_LSOpenURLsWithCompletionHandler() failed for the application /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/AdobeCrashReporter.framework/Versions/A/Adobe Crash Processor.app/Contents/MacOS/Adobe Crash Processor with error -1712.
_LSOpenURLsWithCompletionHandler() failed for the application /Applications/Adobe Lightroom Classic/Adobe Lightroom Classic.app/Contents/Frameworks/AdobeCrashReporter.framework/Versions/A/Adobe Crash Processor.app/Contents/MacOS/Adobe Crash Processor with error -1712.
Using proxy PAC from: http://wpad/wpad.dat
dunamis_feedback_show failed



2026-03-02 19:35:48.895 Adobe Lightroom Classic[30751:842539] DevelopModule: Memory pressure at Warning level!!
<842575> <DynamicLink> <5> Increase wait time to 2
<842539> <GPUFoundation> <0> Error initializing RED SDK (options: 8): 2
<842740> <GPUFoundation> <5> Done loading modules, sec: 0.000162833, device: Metal(0)
sessionReadyCallback: 3
sessionReadyCallback: 0
<843593> <dvamarshal> <0> SendError: Invalid Params
sessionReadyCallback: 5

 

    Correct answer m_1775

    After completely removing CameraRaw folders denoise finally started working. Thank you.

    3 replies

    johnrellis
    johnrellis
    Legend
    March 30, 2026

    Please do the LR menu command Help > System Info and copy/paste the entire contents here so we can see exactly which versions of hardware and software LR thinks you're running and important LR options that are set.

    James Wo0tton
    James Wo0tton
    Participant
    March 30, 2026

    Here is the information from system info:

    Lightroom Classic version: 15.2.1 [ 202603161217-0bf813d9 ]
    License: Creative Cloud
    Language setting: en-CA
    Operating system: Mac OS 15
    Version: 15.7.5 [24G624]
    Application architecture: x64
    Logical processor count: 8
    Processor speed: 1.4GHz
    SqLite Version: 3.36.0
    Adobe GSDK Version: 1.4.0.212

    Power Source: Battery, 80%
    Built-in memory: 8,192.0 MB
    Dedicated GPU memory used by Lightroom: 0.0MB / 0.0MB (0%)
    Real memory available to Lightroom: 8,192.0 MB
    Real memory used by Lightroom: 686.9 MB (8.3%)
    Virtual memory used by Lightroom: 36,430.1 MB
    Memory cache size: 87.3MB
    Internal Camera Raw version: 18.2.2 [ 2512 ]
    Maximum thread count used by Camera Raw: 5
    Camera Raw SIMD optimization: SSE2,AVX,AVX2
    Camera Raw virtual memory: 50MB / 4095MB (1%)
    Camera Raw real memory: 52MB / 8192MB (0%)

    Cache1: 
    NT- RAM:0.0MB, VRAM:0.0MB, Combined:0.0MB

    Cache2: 
    m:87.3MB, n:0.0MB

    U-main: 76.0MB

    Standard Preview Size: 2880 pixels
    Displays: 1) 2880x1800

    Graphics Processor Info: 

    Init State: GPU Unsupported
    User Preference: Auto
    Enable HDR in Library: OFF
    GPU for Preview Generation: Off (S0_0)

    Application folder: /Applications/Adobe Lightroom Classic
    Library Path: /Users/James/Pictures/Lightroom/Lightroom Catalog-v13-3.lrcat
    Settings Folder: /Users/James/Library/Application Support/Adobe/Lightroom

    Installed Plugins: 
    1) AdobeStock
    2) Aperture/iPhoto Importer Plug-in
    3) Flickr
    4) Helicon Focus Export

    Config.lua flags: 

    James Wo0tton
    James Wo0tton
    Participant
    March 30, 2026

    When I try to denoise a cRAW file in Lightroom Classic (v15.2.1) (on Macbook) the progress box pops up, but then partway through the process it disappears and fails to denoise the file. I have uninstalled and reinstalled lightroom with no success. 

    Sameer K
    Community Manager
    Sameer KCommunity Manager
    Community Manager
    March 5, 2026

    Hey, ​@m_1775. Welcome to the Lightroom Community. Thanks for the detailed post. Please follow the two sets of steps and let me know how it goes: 

     

    1 - Close Lightroom

    2 - Go to the following locations and delete everything inside the ModelZoo folder.

    MacOS: /Library/Application Support/Adobe/CameraRaw/ModelZoo/

    MacOS: ~/Library/Application Support/Adobe/CameraRaw/ModelZoo/

    Note: Hold down the Option key in the Finder when using the Go menu. The library will appear below the current user's home directory. 

    3 - Launch Lightroom & try masking.

    4 - If this does not work, you can uninstall Lightroom from the Creative Cloud desktop app and start over from step 2, and install Lightroom Classic at step 3. 

     

    Let me know how it goes. Thanks!
    Sameer K

    (Type '@' and type my name to mention me when you reply)

    m_1775
    m_1775AuthorCorrect answer
    Inspiring
    March 5, 2026

    After completely removing CameraRaw folders denoise finally started working. Thank you.

      LRMIkey411
      LRMIkey411
      Participant
      March 28, 2026

      THIS is the answer to anyone who is having trouble with AI Denoise not working on .ARW Sony RAW Uncompressed files. 

      Delete everything in the CameraRaw folders (2 paths), including the ModelZoo folder.

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