Bug 496294 - screen brightness slider in systemsettings power management has no effect
Summary: screen brightness slider in systemsettings power management has no effect
Status: RESOLVED NOT A BUG
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_powerdevil (show other bugs)
Version: 6.2.3
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-11-15 06:48 UTC by PK
Modified: 2024-11-15 21:02 UTC (History)
3 users (show)

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Description PK 2024-11-15 06:48:26 UTC 
SUMMARY
Using the slider in the systemsettings (power management) has no effect. On both my computers. Both have only one screen

STEPS TO REPRODUCE
1.  Move slider in systemsettings power management module of the systemsettings to change screen brightness and apply new settings

OBSERVED RESULT
Nothing changes

EXPECTED RESULT
Screen brightness changes

SOFTWARE/OS VERSIONS
Operating System: KDE neon 6.2
KDE Plasma Version: 6.2.3
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.0
Kernel Version: 6.8.0-48-generic (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Celeron® J4105 CPU @ 1.50GHz
Memory: 7.4 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 600
Comment 1 Nate Graham 2024-11-15 21:02:43 UTC 
That would be expected: when you use this slider, you're not saying "change the brightness right now", you're saying "set the screen to this brightness level when the system enters this power state".

If you want to change the brightness right now, use the Brightness and Power widget in the System Tray.