https://bugs.kde.org/show_bug.cgi?id=514857

            Bug ID: 514857
           Summary: Unable to change the real brightness of  Samsung
                    Odyssey G5 from the plasma panel.
    Classification: Plasma
           Product: plasmashell
      Version First 6.5.90
       Reported In:
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Power management & brightness
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: 1.0

SUMMARY
Unable to change the real brightness of Samsung Odyssey G5 27" 1440p from the
Plasma panel.

STEPS TO REPRODUCE
1. Change the brightness of the monitor from the Brightness and colour menu.

OBSERVED RESULT
The brightness of the monitor does not change, it only lowers the "virtual"
contrast.

EXPECTED RESULT
The monitor brightness does change.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.5.90
KDE Frameworks Version: 6.22.0
Qt Version: 6.11.0
Kernel Version: 6.18.5-arch1-1 (64-bit)
Graphics Platform: Wayland

ADDITIONAL INFORMATION
The new version of the firmware fixes the issue where the monitor was crashing
when changing the brightness via ddc, so we should be able to change it from
the plasma panel. (see https://bugs.kde.org/show_bug.cgi?id=494522)

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