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P: People Masking fails on Mac (Intel)

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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:

johnrellisCorrect answer

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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.

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J

JCslayingthedemon

Participant

I have been experienceing the sme issue for about two months. Support has told me twice that the next update will fix it and thats it. Theres been multile updates and still cannot detect people. Okay, so it now detects some people and when it does it will detect the person and some f the background.

How can I fix this?

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GCPhoto73

Participant

Having same issues. Attempted to fix by reverting to 15.4.1 but the issue persists. AI masking functionality and updating takes MUCH MUCH longer. Terrible.

Macbook Pro, Intel processor and Radeon pro 5500M running Tahoe 26.6.1

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B

baddog99

Participant

I think LRC is buggy concerning AI Functionality - when I go to PS from LRC and use the Camera Raw Filter I can use every AI function available with no issues. All the versions I use are the latest...

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B

baddog99

Participant

Is this a bug? After editing several images successfully - which included using ai masks and updating the ai settings - on one image I clicked the ai status "update all" and Lightroom Classic (v15.5) crashed with an unknown error. All GPU setting had been on Auto. Since then, the system freezes and eventually shuts down every time I try to use masking or any AI process whether or not GPU acceleration is on/custom or off. Therefore, I surmise it is not a Graphics Card issue (NVIDIA GeForce RTX 5050 Laptop GPU 32.0.16.1088, 8GB). I have tried updating the graphics card, doing a clean install of the graphics card, uninstalling / reinstalling LRC, adding NVIDIA Studio Driver, and even disabling the secondary intel graphics card that came with my system. Nothing has worked! My Catalogue is fine and my system meets all the recommended requirements. Someone please help.

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Anshul_Saini

Community Manager

Hi @Christian TR3,

Thank you for reporting these two issues. I'd like to help narrow down the cause for each one.

Regarding the Person detection in masks, to help our team investigate, could you share the following details:

Copy & paste Lightroom system info (Help > System Info).
Have you checked in Lightroom's Preferences > Performance whether Use Graphic Processor is set to "Auto" or "Custom"?

Regarding Photoshop not coming to the foreground:

Which operating system version are you running?

Do you have multiple monitors connected?

These details will help our product team investigate the issues.

Best,

Anshul Saini

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C

Christian TR3

Participant

Hello and thank you for your answer.

Please find two screenshots regarding my processor setting and versions of LR and PS actually used.

I am using iMac (macOS Tahoe 26.5.2) with two monitors.

Feel free to ask me any additional questions. Best regards. CN_

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C

Christian TR3

Participant

Je suis la dernière Servion de LR. Je n’ai plus détection de personne dans les masques. Les autres masques fonctionnent normalement, la détection de “sujet” en particulier.

De plus plays, lorsque je passe sur PhotoShop, la fenêtre PS passait au premier plan automatiquement. Avec la dernière version, la fenêtre LR reste au premier plan. Il faut remettre la fenêtre PS au premier plan manuellement.

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JohanElzenga

Community Expert

Known issue. MacOS contains buggy drivers for the AMD Radeon GPU. The link posted by @AxelMatt does not seem to work. This one does:

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-- Johan W. Elzenga

A

AxelMatt

Community Expert

. The link posted by @AxelMatt does not seem to work.

The links that I posted wasn’t links to a solution!!!

The thread owner had created three post to the same theme. I closed two of these thread with a hint with the link to this post.

Anybody has merged my answers here and deleted the closed posts.

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My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 26H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI

Srishti Bali

Community Manager

Hi @Phil21886838qk88

Thanks for reaching out, and I'm sorry to hear you're running into this issue. I have merged all your threads into one for better visibility and avoud confusion. To help us investigate, could you please provide a few more details?

Does this happen with all photos, or only with specific images?
Are the affected photos stored locally or in cloud storage/external drives?
Could you share a sample image where People masking fails with the "No people found" message?
Is Lightroom Desktop/ web able to detect faces in the same image or does that also fail?
Have you noticed whether this started after updating to Lightroom Classic 15.5?
Could you also share your System Info? (Go to Help > System Info, click Copy, and paste the details here.)

A short screen recording showing the issue from selecting Masking > People to the "No people found" message would also be very helpful.

Looking forward to your reply.

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Thanks, Srishti Bali | Community & Engagement Strategist, Digital Imaging | Adobe

P

Phil21886838qk88

Participant

Hi

It does it with all photo’s

The images are stored locally, not in the cloud or an external drive.

The selection of people is random as the attached recording will show, look at the recording of the Asian Girl.

It started prior to my 15.5 update.

I have attached recordings as requested, if you need more system info then please let me know - and how to get them

System Info -

Model Name: iMac

Model Identifier: iMac20,1

Processor Name: 8-Core Intel Core i7

Processor Speed: 3.8 GHz

Number of Processors: 1

Total Number of Cores: 8

L2 Cache (per Core): 256 KB

L3 Cache: 16 MB

Hyper-Threading Technology: Enabled

Memory: 64 GB

System Firmware Version: 2103.160.2.0.0 (iBridge: 23.16.16068.0.0,0)

OS Loader Version: 583~5869

Serial Number (system): C02CW35NPN5W

Hardware UUID: E8E658B7-BA11-5E88-8966-598C157AFF34

Provisioning UDID: E8E658B7-BA11-5E88-8966-598C157AFF34

Activation Lock Status: Disabled

Many thanks, I appreciate your help.

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Screen Recording 2026-08-06 at 10.37.35.mov

Screen Recording 2026-08-06 at 10.48.26.mov

Screen Recording 2026-08-06 at 10.57.54.mov

P

Phil21886838qk88

Participant

Interested in the reply as I have the same issue .. on every portrait.

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A

AxelMatt

Community Expert

Thread closed because multiple entries about the same theme.

See here for further discussion: LrC Masking tool cant find people. | Adobe DME

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My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 26H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI

A

AxelMatt

Community Expert

Thread closed because multiple entries about the same theme.

See here for further discussion: LrC Masking tool cant find people. | Adobe DME

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My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 26H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI

M

michelegranja

Known Participant

Link doesn’t work.

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