Bug 515899

Summary: Buttons of the spinbox used to adjust the screen brightness not always work when I open System Settings and then go to Display Configuration KCM
Product: [Applications] systemsettings Reporter: Patrick Silva <bugseforuns>
Component: kcm_kscreenAssignee: kscreen-bugs-null <kscreen-bugs-null>
Status: CONFIRMED ---    
Severity: normal CC: fella, plasma-bugs-null
Priority: NOR    
Version First Reported In: 6.5.91   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: screen recording

Description Patrick Silva 2026-02-12 10:05:25 UTC
Created attachment 189484 [details]
screen recording

SUMMARY
As we can observe in the attached screen recording, if I open System Settings and then go to Display Configuration KCM, the buttons of the spinbox used to adjust the screen brightness sometimes work, sometimes them do not. The said buttons always work if I open the KCM via context menu of desktop.

EXPECTED RESULT
the buttons of the spinbox always work

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.5.91
KDE Frameworks Version: 6.22.0
Qt Version: 6.11.0
Graphics Platform: Wayland
Comment 1 Tobias Fella 2026-02-12 10:13:23 UTC
Can reproduce as well. Looks like it's ultimately the same as https://bugs.kde.org/show_bug.cgi?id=515898