https://bugs.kde.org/show_bug.cgi?id=500041
Bug ID: 500041
Summary: Monitor brightness limited to 30%
Classification: Plasma
Product: plasmashell
Version: 6.3.0
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: Power management & brightness
Assignee: plasma-b...@kde.org
Reporter: david.p.war...@gmail.com
Target Milestone: 1.0
SUMMARY
Setting monitor brightness via the system tray applet results in a maximum
actual brightness of 30%.
STEPS TO REPRODUCE
1. Change a monitor's brightness via the system tray applet.
OBSERVED RESULT
Setting the brightness to 100% sets the actual brightness to 30% (as seen on
the monitor OSD). Setting the brightness to 50% sets the actual brightness to
15%.
EXPECTED RESULT
The applet brightness matches the OSD brightness.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.2
Fedora 41
Wayland
Kernel 6.12.11
ADDITIONAL INFORMATION
2 monitors connected via DisplayPort, 1 by HDMI (all exhibit this behaviour)
AMD Radeon RX 6800 XT
Mesa 24.3.4
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