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Participant
February 27, 2026
Answered

P: People Masking fails on Mac (Intel)

  • February 27, 2026
  • 95 replies
  • 2421 views

Since the latest versions of Lightroom Classic and MacOS the masking of people always shows “No people found” – even on photos where it was working before.

 

Lightroom Classic version: 15.2 [ 202602111402-ec4112e8 ]
License: Creative Cloud
Language setting: en-DE
Operating system: Mac OS 26
Version: 26.3.0 [25D125]
Application architecture: x64
Logical processor count: 24
Processor speed: 3,3GHz
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.171

Built-in memory: 196.608,0 MB
Dedicated GPU memory used by Lightroom: 4.743,3MB / 16.368,0MB (28%)
Real memory available to Lightroom: 196.608,0 MB
Real memory used by Lightroom: 3.040,3 MB (1,5%)
Virtual memory used by Lightroom: 55.303,7 MB
Memory cache size: 62,7MB
Internal Camera Raw version: 18.2 [ 2482 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 631MB / 98303MB (0%)
Camera Raw real memory: 644MB / 196608MB (0%)

Cache1: 
Final1- RAM:519,0MB, VRAM:1.818,0MB, ALP05331.ARW
NT- RAM:519,0MB, VRAM:1.818,0MB, Combined:2.337,0MB

Cache2: 
m:62,7MB, n:253,8MB

U-main: 129,0MB

Standard Preview Size: 6016 pixels
Displays: 1) 6016x3384

Graphics Processor Info: 
Metal: AMD Radeon Pro W5700X
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF
GPU for Preview Generation: Off (S5_15)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/Sonnet m2/Lightroom/Lightroom Catalog-v13-3.lrcat
Settings Folder: /Users/zippo/Library/Application Support/Adobe/Lightroom

Installed Plugins: 
1) Publisher, By The Turning Gate

Config.lua flags: 

    Correct answer johnrellis

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    @sirthrosturv, ​@Hot Tubs Oxfordshire, there are many reports that People masking fails on Intel Macs with Mac OS 26.3, and the evidence strongly points at a buggy AMD graphics driver released in 26.3:

    While waiting for Apple and AMD to release a fixed driver, try this workaround:

     

    @Hot Tubs Oxfordshire I intalled Mac OS Sequoia on an external drive (since it appears impossible to downgrade Tahoe) and people detection is no an issue when runnig Lightroom under that OS on the iMac.

    That’s further evidence it’s a bug in the Mac OS 26.3 AMD graphics driver.

     

     

    95 replies

    Participant
    February 27, 2026

    Since the latest versions of Lightroom Classic and MacOS the masking of people always shows “No people found” – even on photos where it was working before.

     

    Lightroom Classic version: 15.2 [ 202602111402-ec4112e8 ]
    License: Creative Cloud
    Language setting: en-DE
    Operating system: Mac OS 26
    Version: 26.3.0 [25D125]
    Application architecture: x64
    Logical processor count: 24
    Processor speed: 3,3GHz
    SqLite Version: 3.36.0
    Adobe GSDK Version: 1.4.0.171

    Built-in memory: 196.608,0 MB
    Dedicated GPU memory used by Lightroom: 4.743,3MB / 16.368,0MB (28%)
    Real memory available to Lightroom: 196.608,0 MB
    Real memory used by Lightroom: 3.040,3 MB (1,5%)
    Virtual memory used by Lightroom: 55.303,7 MB
    Memory cache size: 62,7MB
    Internal Camera Raw version: 18.2 [ 2482 ]
    Maximum thread count used by Camera Raw: 5
    Camera Raw SIMD optimization: SSE2,AVX,AVX2
    Camera Raw virtual memory: 631MB / 98303MB (0%)
    Camera Raw real memory: 644MB / 196608MB (0%)

    Cache1: 
    Final1- RAM:519,0MB, VRAM:1.818,0MB, ALP05331.ARW
    NT- RAM:519,0MB, VRAM:1.818,0MB, Combined:2.337,0MB

    Cache2: 
    m:62,7MB, n:253,8MB

    U-main: 129,0MB

    Standard Preview Size: 6016 pixels
    Displays: 1) 6016x3384

    Graphics Processor Info: 
    Metal: AMD Radeon Pro W5700X
    Init State: GPU for Export supported by default
    User Preference: Auto
    Enable HDR in Library: OFF
    GPU for Preview Generation: Off (S5_15)

    Application folder: /Applications/Adobe Lightroom Classic
    Library Path: /Volumes/Sonnet m2/Lightroom/Lightroom Catalog-v13-3.lrcat
    Settings Folder: /Users/zippo/Library/Application Support/Adobe/Lightroom

    Installed Plugins: 
    1) Publisher, By The Turning Gate

    Config.lua flags: 

    Seelview
    Participant
    February 25, 2026

    I have the same issue. I am using Lightroom Classic 15.2 on a iMac 5k 2020. For a few weeks when i try to use mask with people, the loading circle spins for 2-3 seconds and then “no people detected”

    JohanElzenga
    Community Expert
    Community Expert
    February 25, 2026

    See 

     

    -- Johan W. Elzenga
    shotsfromtray
    Participant
    February 2, 2026

    When I go to the Masks options and click on people it is not finding the person for some odd reason. Even on old pictures where I already have a mask on of a person it is not allowing me to add a layer Mask of the person to edit something different on them. Why is that ? 

    JohanElzenga
    Community Expert
    Community Expert
    February 1, 2026

    You need to give us more information. Your hardware, your OS, version numbers. A failure to detect people is (on Windows computers) often caused by outdated GPU drivers.

    -- Johan W. Elzenga
    shotsfromtray
    Participant
    February 2, 2026

    I’m using a MacBook Air on Lightroom Classic

    JohanElzenga
    Community Expert
    Community Expert
    February 2, 2026

    We need more info. Which MacBook Air, which version of MacOS does it run, which version of Lightroom Classic. And no ‘latest version’ answers, please. We need version numbers.

    -- Johan W. Elzenga
    shotsfromtray
    Participant
    January 31, 2026

    why is my ( people mask ) not detecting the person ? Even on old pictures where I already have a people mask with edits.

    johnrellis
    Legend
    June 17, 2026

    @shotsfromtray Please do the LR menu command Help > System Info, click the Copy button in the upper right corner, and paste into your reply here, so we can see exactly which versions of hardware and software LR thinks you're running and important LR options that are set.