[Solved] Can't Control Brightness in ASUS ROG Laptop

Abhinav · 2025-04-30 12:34:03

I can't seem to control the brightness with powerdevil or many software.

I think it is a ACPI error as

# echo 100 > cat /sys/class/backlight/nvidia_wmi_ec_backlight/brightness

will change the value in the file but no change in brightness occurs.

Changing the one of the following kernel parameter to

acpi_backlight=video
acpi_backlight=vendor
acpi_backlight=native

doesn't work. As suggested by the wiki.

Solved: I am just dumb after

sudo grub-mkconfig -o /boot/grub/grub.cfg

reboot. Its a bootmanager.

Last edited by Abhinav (2025-04-30 13:24:31)

Arch Linux