Bug 495381

Summary:	Modifying screen brightness using brightnessctl should be instantly recognized by Plasma
Product:	[Plasma] plasmashell	Reporter:	Quentin <kde>
Component:	Power management & brightness	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	CONFIRMED ---
Severity:	wishlist	CC:	natalie_clarius, nate
Priority:	NOR
Version First Reported In:	6.2.4
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Quentin 2024-10-26 13:28:05 UTC

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SUMMARY

Modifying screen brightness using brightnessctl isn't reflected in Plasma. Plasma brightness is no longer synchronized with the actual screen brightness. This bug started when upgrading to plasma 6.2.

STEPS TO REPRODUCE
1. Set screen brightness to 20% using plasma widget
2. Modify brightness using `brightnessctl set 80%`
3. Screen brightness is correctly changed to 80%

OBSERVED RESULT

1. Widget still show 20% brightness
2. Updating brightness with keyboard shortcut is calculated on the wrong value of 20% 

EXPECTED RESULT

1. Widget should show 80% brightness
2. Updating brightness with keyboard shortcut should be calculated on 80%

SOFTWARE/OS VERSIONS

Operating System: Fedora Linux 40
KDE Plasma Version: 6.2.2
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2
Kernel Version: 6.11.4-201.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i7-1185G7 @ 3.00GHz
Memory: 31.1 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics

ADDITIONAL INFORMATION