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Hi,
I have a MacBook Pro M1 14" (32 GB/1 TB) working under Sonoma 14.5.
I have downloaded the latest version of Lightroom Classic (14.2) and I am faced with two issues:
1) The import doesn't start. I wait for a long time and, after a while, I must quit LrC and restart it. Then, after a relaunch, the import works.
2) Occasionnaly, when clicking on the thumbnail in the Library module, I get a gray window, no image. When trying to switch to the Develop module, the window turns green....
Thanks !
Robert
2 Correct answers
The first thing that you should try is to switch off the GPU support from the Lightroom preferences and check if that helps to fix the issue.
Go to Lightroom > Preferences > Performance tab > Uncheck "Use Graphics Processor" > Restart Lightroom.
https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-gpu.html
If Lightroom doesn't start correctly the please see "Solution 2" in the document behind the link below.
Troubleshoot GPU issues | Lightroom Classic (adobe.com)
If it's help see here Troubleshoot GPU issues | Lightroom Classic (adobe.com)
...Hi, thanks for reaching out!
Please go to the Help menu in Lightroom Classic, then System info and copy the text. You can either paste the text here in a reply or to a text file and share the file with us.
You can try to reset the preferences of Lightroom using the steps mentioned here: https://adobe.ly/2JSym5e
Please backup your presets prior to resetting the preferences.
Let us know how it goes!
Thanks,
Nikunj
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The first thing that you should try is to switch off the GPU support from the Lightroom preferences and check if that helps to fix the issue.
Go to Lightroom > Preferences > Performance tab > Uncheck "Use Graphics Processor" > Restart Lightroom.
https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-gpu.html
If Lightroom doesn't start correctly the please see "Solution 2" in the document behind the link below.
Troubleshoot GPU issues | Lightroom Classic (adobe.com)
If it's help see here Troubleshoot GPU issues | Lightroom Classic (adobe.com) and check the different steps.
Another step is to try to reset the Lightroom preferences.
https://www.lightroomqueen.com/how-do-i-reset-lightrooms-preferences/
It's recommended to backup your preferences before you reset the preferences to the default settings:
https://helpx.adobe.com/lightroom-classic/kb/preference-file-and-other-file-locations.html
If this doesn't help we need more informations about your environment.
Please provide also a copy of your 'System Info'. This can be get from the LrC Help > System Info menu item. There's a copy button in the System Info dialog. Press this button and paste the info into your next forum post.
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Below is my System Info. I will try your suggestions and keep you informed.
Regards,
Robert
Lightroom Classic version: 14.2 [ 202502071718-3869eef7 ]
License: Creative Cloud
Language setting: en
Operating system: Mac OS 14
Version: 14.5.0 [23F79]
Application architecture: arm64
Logical processor count: 10
Processor speed: NA
SqLite Version: 3.36.0
Power Source: Plugged In, 100%
Built-in memory: 32.768,0 MB
Dedicated GPU memory used by Lightroom: 4.074,3MB / 21.845,3MB (18%)
Real memory available to Lightroom: 32.768,0 MB
Real memory used by Lightroom: 6.285,0 MB (19,1%)
Virtual memory used by Lightroom: 426.315,7 MB
Memory cache size: 1.573,2MB
Internal Camera Raw version: 17.2 [ 2155 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 2571MB / 16383MB (15%)
Camera Raw real memory: 2589MB / 32768MB (7%)
Cache1:
Final1- RAM:410,0MB, VRAM:185,0MB, 0004943.fff
NT- RAM:410,0MB, VRAM:185,0MB, Combined:595,0MB
Cache2:
m:1.573,2MB, n:548,8MB
U-main: 141,0MB
Standard Preview Size: 2880 pixels
Displays: 1) 3024x1964
Graphics Processor Info:
Metal: Apple M1 Pro
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF
Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/robertfarhi/Pictures/Lightroom/Tout/All.lrcat
Settings Folder: /Users/robertfarhi/Library/Application
Support/Adobe/Lightroom
Installed Plugins:
1) Flickr
2) HDR Efex Pro 2
3) Negative Lab Pro v3
4) Topaz Photo AI
Config.lua flags:
--
Robert Farhi Photographie:
robertfarhi.fr
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Hi, thanks for reaching out!
Please go to the Help menu in Lightroom Classic, then System info and copy the text. You can either paste the text here in a reply or to a text file and share the file with us.
You can try to reset the preferences of Lightroom using the steps mentioned here: https://adobe.ly/2JSym5e
Please backup your presets prior to resetting the preferences.
Let us know how it goes!
Thanks,
Nikunj
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Hi,
Below is my System Info.
I will try to reset the preferences and tell you.
Regards,
Robert
Lightroom Classic version: 14.2 [ 202502071718-3869eef7 ]
License: Creative Cloud
Language setting: en
Operating system: Mac OS 14
Version: 14.5.0 [23F79]
Application architecture: arm64
Logical processor count: 10
Processor speed: NA
SqLite Version: 3.36.0
Power Source: Plugged In, 100%
Built-in memory: 32.768,0 MB
Dedicated GPU memory used by Lightroom: 4.074,3MB / 21.845,3MB (18%)
Real memory available to Lightroom: 32.768,0 MB
Real memory used by Lightroom: 6.285,0 MB (19,1%)
Virtual memory used by Lightroom: 426.315,7 MB
Memory cache size: 1.573,2MB
Internal Camera Raw version: 17.2 [ 2155 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 2571MB / 16383MB (15%)
Camera Raw real memory: 2589MB / 32768MB (7%)
Cache1:
Final1- RAM:410,0MB, VRAM:185,0MB, 0004943.fff
NT- RAM:410,0MB, VRAM:185,0MB, Combined:595,0MB
Cache2:
m:1.573,2MB, n:548,8MB
U-main: 141,0MB
Standard Preview Size: 2880 pixels
Displays: 1) 3024x1964
Graphics Processor Info:
Metal: Apple M1 Pro
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF
Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/robertfarhi/Pictures/Lightroom/Tout/All.lrcat
Settings Folder: /Users/robertfarhi/Library/Application Support/Adobe/Lightroom
Installed Plugins:
1) Flickr
2) HDR Efex Pro 2
3) Negative Lab Pro v3
4) Topaz Photo AI
Config.lua flags:
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Hi the community !
I have backuped my presets and restored my preferences.
I didn't disable GPU for the time being, as it could help to go faster when dealing with some operations.
I will be far from my computer for some days and tell you as it goes when I am back, on Wednesday.
Thanks and Regards,
Robert
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Hi AxelMatt and Nikunj,
I am back, I have tried after resetting my preferences and it works !!
Thank you very much for your help and your time.
Robert

