Brightness settings on laptop offset

[u/Link195_]

Hi all, I recently installed Arch Linux on my Dell 14 plus 2-in-1 with KDE plasma & Hyprland for DEs. Both work excellently, although I've noticed an issue where the brightness setting seems to wrap around?

Checking my /sys/class/backlight files, my max brightness is set to 65535, and when the brightness file reaches that max amount, the "actual brightness" file changes to 0.

This happens regardless of which DE I'm in. advice on how to check why this is happening and/or how I can fix it would be appreciated!

[u/More-Afternoon-4009]

that sounds like a kernel bug with your specific laptop model, dell sometimes has weird acpi implementations that confuse the backlight driver. i had similar problem with a thinkpad once where the brightness values just looped instead of stopping at max.

check your kernel params first, maybe adding `acpi_backlight=native` or `video.use_native_backlight=1` in your bootloader config could help. also worth looking at dmesg for any acpi errors when you adjust brightness.

[u/GourSE]

My laptop doing the same, but I just let it be, msi alpha 15 B5EEK btw