[Bug]: Brightness setting doesn't work

[FatngatirBilek]

Bug Report

Description

[Brightness setting doesn't work.]

Steps to Reproduce

1. Using brightness setting on waybar
2. Using brightnessctl on terminal also not working

Expected Behavior

the brightness on my monitor will change

Actual Behavior

doesn't change the brightness

Environment

[Please add any other relevant information about the bug and remove the unnecessary lines.]

e.g.,

• Linux Distro: EndeavourOS
• Linux Version, output of uname -a: Linux archie 6.9.1-arch1-2 How to get external screen up and running ? #1 SMP PREEMPT_DYNAMIC Wed, 22 May 2024 13:47:07 +0000 x86_64 GNU/Linux
• Hyprland Version, output of hyprctl version: Hyprland, built from branch at commit cba1ade848feac44b2eda677503900639581c3f4 (props: bump version to 0.40.0).
  Date: Sat May 4 15:42:32 2024
  Tag: v0.40.0, commits: 4606
• Installation Environment: main hardware
• Other info: using nvidia card

[JaKooLit]

whats the output of

~/.config/hypr/scripts/Brightness.sh --dec

?

[JaKooLit]

https://github.com/Hummer12007/brightnessctl?tab=readme-ov-file#id-like-to-configure-the-brightness-of-an-external-monitor

if you are controlling external monitor,

see here

I didnt configure external monitor brightness control

[FatngatirBilek]

~/.config/hypr/scripts/Brightness.sh --dec

here's the output

[FatngatirBilek]

https://github.com/Hummer12007/brightnessctl?tab=readme-ov-file#id-like-to-configure-the-brightness-of-an-external-monitor

if you are controlling external monitor,

see here

I didnt configure external monitor brightness control

this is laptop monitor

[JaKooLit]

~/.config/hypr/scripts/Brightness.sh --dec

here's the output

it seems working...

now increase again... this time with --inc instead of --dec

[JaKooLit]

sudo chmod +s $(which brightnessctl)

try this command

[FatngatirBilek]

sudo chmod +s $(which brightnessctl)

try this command

[JaKooLit]

try again.. hopefully this time will work :)

[FatngatirBilek]

try again.. hopefully this time will work :)

it's still not working :(((

[JaKooLit]

well im not so sure.... the script seems working... as per screenshot youve shown

[JaKooLit]

swaync can also control backlight

but seeing you have nvidia,

you may need to configure it

JaKooLit/Hyprland-Dots#118

[FatngatirBilek]

well im not so sure.... the script seems working... as per screenshot youve shown

well the script is working, but I don't see any changes on my monitor. looks like this is nvidia's fault LOL

[FatngatirBilek]

ofc it's work, but i don't see any changes on the monitor

[FatngatirBilek]

@JaKooLit it works now.

Turns out this is a problem between Nvidia and Wayland which makes brightnessctl not work.
Installing acpilight with

"sudo pacman -S acpilight"

and adding "acpi_backlight=native"
on "/etc/default/grub"
like this:

then run "sudo grub-mkconfig -o /boot/grub/grub.cfg"

fixed the problem.
Thanks for your help @JaKooLit

[JaKooLit]

@JaKooLit it works now.

Turns out this is a problem between Nvidia and Wayland which makes brightnessctl not work. Installing acpilight with

"sudo pacman -S acpilight"

and adding "acpi_backlight=native" on "/etc/default/grub" like this:

then run "sudo grub-mkconfig -o /boot/grub/grub.cfg"

fixed the problem. Thanks for your help @JaKooLit

Thanks alot for sharing. I will refer this to my FAQ

[FatngatirBilek]

@JaKooLit it works now.
Turns out this is a problem between Nvidia and Wayland which makes brightnessctl not work. Installing acpilight with

"sudo pacman -S acpilight"

and adding "acpi_backlight=native" on "/etc/default/grub" like this:
then run "sudo grub-mkconfig -o /boot/grub/grub.cfg"
fixed the problem. Thanks for your help @JaKooLit

Thanks alot for sharing. I will refer this to my FAQ

you're welcome