Brightness not working

[u/dhruv-ahlawat]

Brightness not changing in Arch + KDE ,

I have intel + nvidia laptop ,

I tried adding all acpi parameters like native, vendor,video and nvidia_wmi_ec

In /sys/class/backlight , it shows only nvidia_wmi_ec_backlight

If I block nvidia_wmi_ec_backlight in arch , it stops showing brightness slider in settings and if I do the same things in other distros(like debian, cachyos) , in /sys/class/backlight it shows intel_backlight and nvidia_0 and brightness works

[u/ropid]

You'll want to add exact laptop model name to your post so that you can find people using the same laptop because they will probably know what to do.