Bug 501415 - Brightness level below 100% is not persistent after reboot or unplugging/replugging power adapter
Summary: Brightness level below 100% is not persistent after reboot or unplugging/repl...
Status: RESOLVED NOT A BUG
Alias: None
Product: plasmashell
Classification: Plasma
Component: Power management & brightness (other bugs)
Version First Reported In: 6.3.2
Platform: Other Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-03-12 16:23 UTC by John B
Modified: 2025-03-12 16:33 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description John B 2025-03-12 16:23:09 UTC 
SUMMARY
I set my laptop screen brightness to around 30%. However, since a recent update (I think to Plasma 6.3) this setting is no longer persistent after (1) a reboot or (2) unplugging then replugging the power adapter. In these cases it resets to 100%. NB on suspend/return the brightness level is indeed persistent.

STEPS TO REPRODUCE
1. Set brightness to level below 100%
2. Either (1) reboot or (2) unplug and replug the power adapter

OBSERVED RESULT
Brightness level resets to 100%

EXPECTED RESULT
Preset brightness level (below 100%) is maintained

SOFTWARE/OS VERSIONS
Operating System: TUXEDO OS 
KDE Plasma Version: 6.3.2
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.11.0-109019-tuxedo (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 4800H with Radeon Graphics
Memory: 15.0 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: TUXEDO
Product Name: TUXEDO Pulse 14 Gen1
Comment 1 John B 2025-03-12 16:33:51 UTC 
It appears the update modified my power management settings! I am now able to return to the expected behaviour. Closing as Not a Bug.