https://bugs.kde.org/show_bug.cgi?id=482713
Bug ID: 482713
Summary: Screen brightness control randomly unavailable in some
sessions
Classification: Plasma
Product: Powerdevil
Version: 6.0.0
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: rjawiygv...@gmail.com
CC: m...@ratijas.tk, natalie_clar...@yahoo.de
Target Milestone: ---
SUMMARY
I've noticed that plasma showed a brightness icon in notifications even though
I'm using a desktop, not a laptop. Turned out it actually works and when I
change brightness it's actually being changed in my monitor settings which is
great. The problem is it only works sometimes. For example, after booting the
PC it may be unavailable, but after logging out back in it's available again,
but it's not guaranteed and is seemingly random. When I say it's not available
I mean at least two things:
1. "Brightness and color" dialog that opens when you click on brightness icon
in the panel doesn't have a brightness slider at all, it only has night light
settings.
2. Keyboard shortcuts I've set for controlling screen brightness don't work.
But when brightness slider is visible they do work.
STEPS TO REPRODUCE
1. Reboot or logout and in and try to change brightness every time
OBSERVED RESULT
Sometimes you can control screen brightness and sometimes you can't
EXPECTED RESULT
Always being able to control screen brightness
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 40 (Kinoite 40.20240306.n.0) with Unofficial LTS
kernel 6.6.19-200.fc40.x86_64 (kwizart/kernel-longterm-6.6 copr)
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
ADDITIONAL
GPU: AMD Radeon RX 6600
Display: AOC 2590G4
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