Bug 488243

Summary:	Brightness resets unwanted
Product:	[Plasma] plasmashell	Reporter:	Matthias <shalokshalom>
Component:	Brightness and Color widget	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	jpetso, natalie_clarius, nate
Priority:	NOR
Version First Reported In:	master
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Matthias 2024-06-09 06:17:25 UTC

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SUMMARY

Hi there :)

When I manually adjust the brightness level, the slider of the Brightness and Colors widget resets to 30% 
It does not reset the actual brightness, mind you. 

Still, whenever that value is read by Plasma, it obviously jump to that level:

Let's say I set the brightness level to 5%, and set "Turn off screen" for "When laptop lid is closed" 
Closing and opening the laptop lid brings the brightness up to 30% now. 

I assume this was due to the upgrade to Plasma 6.0.5 or Qt 6.7.1

Operating System: Garuda Linux 
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.1
Kernel Version: 6.9.3-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800U with Radeon Graphics
Memory: 13,5 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: LENOVO
Product Name: 82L0
System Version: Yoga Slim 7 Carbon 14ACN6

Comment 1 Matthias 2024-06-09 06:26:26 UTC

I now realize, the OSD has no effect on the widget. Changing my display brightness via keyboard combinations shows the change on the OSD and actually changes it. Here is my log, journalctl -b: https://dpaste.org/rvht4

Comment 2 Nate Graham 2024-06-10 18:35:01 UTC

So only the slider in the widget is broken, and the keyboard shortcuts work as expected?

Comment 3 Matthias 2024-06-12 09:36:14 UTC

Well, yes and no. I also experienced, that the brightness was always reset to the level, that the widget was set. But with a recent update, but seems to be resolved. Closing for now, will open it again, if it comes back. Thanks a lot