Bug 498571

Summary:	Brightness resets to 9% after reboot and slider randomly disappears
Product:	[Plasma] kwin	Reporter:	helohe
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description helohe 2025-01-12 19:48:27 UTC

***
If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org

If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports

Please remove this comment after reading and before submitting - thanks!
***

Recently (debian testing) some update changed the behaviour of the brightness in KDE.
Whenever I restart the brightness resets to 9% even though I have it set at 30%. This is with nightlight enabled (not sure if it makes a difference.) Furthermore randomly the brightness slider disappears. restarting powerdevil 

systemctl --user restart plasma-powerdevil.service

fixes it temporarily.

STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Comment 1 Nate Graham 2025-01-13 19:37:34 UTC


*** This bug has been marked as a duplicate of bug 482713 ***