Bug 495109

Summary:	Monitor brightness is reset to 100% after boot
Product:	[Plasma] plasmashell	Reporter:	einjonas <jonaspeitz>
Component:	Power management & brightness	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	REPORTED ---
Severity:	normal	CC:	bugs_kde_org.5.kuru, jpetso, kde, natalie_clarius, nate, thefeeltrain
Priority:	NOR
Version:	6.2.4
Target Milestone:	1.0
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description einjonas 2024-10-20 20:20:03 UTC

Brightness of the monitor is at 100% after boot it resets every boot. 
It doesn't respect the monitor controls. Setting it manually it the control Panel of KDE is kinda fixing it.


Operating System: Fedora Linux 40
KDE Plasma Version: 6.2.1
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2
Kernel Version: 6.11.3-200.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 31.2 GiB of RAM
Graphics Processor: AMD Radeon RX 6700 XT

Comment 1 RW 2024-10-21 06:08:49 UTC

I've a similar issue and maybe it's also related to https://bugs.kde.org/show_bug.cgi?id=495106 (not my issue). Similar setup as the reporter:

Operating System: Archlinux
KDE Plasma Version: 6.2.1
KDE Frameworks Version: 6.7.0
Qt Version: 6.8.0
Kernel Version: 6.11.4
Graphics Platform: Wayland
Processors: AMD Ryzen 9 3900X 12-Core Processor
Memory: 128 GiB of RAM
Graphics Processor: AMD Radeon RX 6700 XT

Besides that the brightness control sooner or later "disappears". So you can only control the "Night control" anymore but the "Brightness" slider disappears. But so far I wasn't able to figure out when this happens.