Help me disable this function

[adrianac105289]

Lightroom classic: when in Develop mode, dark pictures show an overlay of different colors. Similar to the black clip on the histogram.  I already try so many options, but nothing seems to fix it. When I open the image on Library, it shows the normal colors. Any idea what I am doing wrong? 

Thank you! 

[jane-e]

@adrianac105289 

I've moved your post from Using the Community to the Lightroom Classic forum

Jane

[adrianac105289]

Thank you! 😊

[Ian Lyons]

It's probably due to garphics card driver. To help us dianose the issue, please provide a copy of your LrC 'System Info'. You can obtain this from the LrC Help>System Info menu item.

Note that there's a Copy button at the top right corner of the System Info dialog box. You should use this button to capture the contents, then use paste to insert into your next forum post.

[adrianac105289]

Lightroom Classic version: 12.5.2 [ 202407222047-4506be05 ]

License: Creative Cloud

Language setting: en-US

Operating system: Mac OS 11

Version: 11.7.10 [20G1427]

Application architecture: x64

Logical processor count: 4

Processor speed: 3.5GHz

SqLite Version: 3.36.0

Built-in memory: 16,384.0 MB

Real memory available to Lightroom: 16,384.0 MB

Real memory used by Lightroom: 4,368.9 MB (26.6%)

Virtual memory used by Lightroom: 15,190.8 MB

Memory cache size: 1,108.7MB

Internal Camera Raw version: 15.5 [ 1596 ]

Maximum thread count used by Camera Raw: 3

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 1082MB / 8191MB (13%)

Camera Raw real memory: 1105MB / 16384MB (6%)

Standard Preview Size: 1440 pixels

Displays: 1) 5120x2880

Graphics Processor Info:

Metal: AMD Radeon R9 M290X

Init State: GPU for Image Processing supported by default with custom export support

User Preference: Auto

[johnrellis]

"Lightroom Classic version: 12.5.2

Operating system: Mac OS 11

Metal: AMD Radeon R9 M290X"

This is almost certainly a bug in the graphics driver.  You've got an 11-year-old graphics processor and a four-year-old version of Mac OS, and AMD last updated the driver for that GPU three years ago.  So there's no way to get a bug-fixed driver.

Try setting Preferences > Performance > Use Graphics Processor to Off. 

[GoldingD]

Please post a screenshot of your LrC /Preferences/Performance/