[kde] [Bug 495381] New: Modifying screen brightness using brightnessctl isn't reflected in Plasma

[Quentin]

https://bugs.kde.org/show_bug.cgi?id=495381

            Bug ID: 495381
           Summary: Modifying screen brightness using brightnessctl isn't
                    reflected in Plasma
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: kde at ovv.wtf
  Target Milestone: ---

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SUMMARY

Modifying screen brightness using brightnessctl isn't reflected in Plasma.
Plasma brightness is no longer synchronized with the actual screen brightness.
This bug started when upgrading to plasma 6.2.

STEPS TO REPRODUCE
1. Set screen brightness to 20% using plasma widget
2. Modify brightness using `brightnessctl set 80%`
3. Screen brightness is correctly changed to 80%

OBSERVED RESULT

1. Widget still show 20% brightness
2. Updating brightness with keyboard shortcut is calculated on the wrong value
of 20% 

EXPECTED RESULT

1. Widget should show 80% brightness
2. Updating brightness with keyboard shortcut should be calculated on 80%

SOFTWARE/OS VERSIONS

Operating System: Fedora Linux 40
KDE Plasma Version: 6.2.2
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2
Kernel Version: 6.11.4-201.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i7-1185G7 @ 3.00GHz
Memory: 31.1 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics

ADDITIONAL INFORMATION

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