https://bugs.kde.org/show_bug.cgi?id=481034

            Bug ID: 481034
           Summary: Applying a color profile makes the screen much darker
    Classification: Plasma
           Product: kwin
           Version: 5.92.0
          Platform: Compiled Sources
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kwin-bugs-n...@kde.org
          Reporter: bizy...@zoho.com
  Target Milestone: ---

SUMMARY
I wanted to test the new “ICC color profile” option in Display Configuration,
so I've downloaded an .icm file for my monitor and tried to apply it in System
Settings. For some reason, that makes my screen much darker at the same
brightness levels, which I suspect could be a problem.

I don't have any additional “Steps to reproduce”, but the problem is likely
hardware-specific.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20240206
KDE Plasma Version: 6.0.80
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.1
Kernel Version: 6.7.2-1-default (64-bit)
Graphics Platform: Wayland
Processors: 32 × Intel® Core™ i9-14900K
Graphics Processor: NVIDIA GeForce RTX 4070/PCIe/SSE2

ADDITIONAL INFORMATION
Monitor:
https://www.dell.com/support/home/en-uk/product-support/product/dell-u2722de-monitor/overview
The .icm file (attached) is extracted from
https://www.dell.com/support/home/en-uk/drivers/driversdetails?driverid=1hwjn&oscode=wt64a&productcode=dell-u2722de-monitor

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