Brightness slider doesn't change brightness

General system Newbie
1

The brightness slider increments by 4, 6 or 7% instead of 5% sometimes but the actual brightness doesn’t change at all and it looks like it’s at 100%. On a laptop with 6800H + RTX 3050Ti and I haven’t installed Nvidia drivers yet.

2

what DE (Desktop Environment) is the main question.
And this is a Notebook? with Optimus hybrid graphics?

show hardware:

https://discovery.endeavouros.com/forum-log-tool-options/how-to-include-systemlogs-in-your-post/2021/03/

And indeed welcome on to the purpelization :enos:

3

Running KDE Plasma

Logs:
Hardware - https://0x0.st/HZ5w.txt
Boot log - https://0x0.st/HZ5x.txt

4

I’m able to change the brightness using
xrandr --output eDP-1 --brightness 0.8 --gamma 1:1:1

5

https://aur.archlinux.org/packages/tuf-manager

Could help

6

I think my issue is the one in 6.4 of https://wiki.archlinux.org/title/backlight. I recently updated the BIOS so the new BIOS version and the kernel might be incompatible.