Manage your brightness and get desktop notification feedback with this simple script. It's a good idea to map this script to keys in your WM or DE. You can search how to set XF86BrightnessUp and XF86BrightnessDown in your WM.
xbacklight-ctl up # Increase brightness by 10% (configurable)
xbacklight-ctl down # Decrease brightness by 10% (configurable)
xbacklight-ctl up 30 # Increase brightness by 30%
xbacklight-ctl down 80 # Decrease brightness by 80%
xbacklight-ctl max # Set max brightness (configurable)
xbacklight-ctl min # Set min brightness (configurable)
xbacklight-ctl set 50 # Set brightness to 50 percent
Your brightness it's never going to be lower than your min brightness, so you won't get a black screen if you accidentally set your backlight to 0.
Use your favorite AUR helper
yay -S xbacklight-ctl-git
pacaur -S xbacklight-ctl-git
Or install it manually with the PKGBUILD and makepkg -si, I'm pretty sure that you know what you are doing.
Your configuration file it's located in $XDG_CONFIG_HOME/xbacklight-ctl/rc.cfg (~/.config/xbacklight-ctl/rc.cfg).
You can set:
# This is the amount of percent that is going to increase or decrease.
PERC=10
MAX=100
# If you set this to 0, you will get a black screen when you reach the minimum brightness.
MIN=10
# Length of time to spend fading the backlight between old and new value.
TIME=100
# Number of steps to take while fading.
STEPS=20
# Receive desktop notifications with notify-send.
NOTIFY=yes
Key([], "XF86MonBrightnessUp", lazy.spawn("xbacklight-ctl up"), desc="Increase backlight"),
Key([], "XF86MonBrightnessDown", lazy.spawn("xbacklight-ctl down"), desc="Decrease backlight"),
If you are not receiving the notifications, there is probably a problem with your notification server. To test this, please run notify-send "I'm working". If nothing happened, please refer to the archwiki.
They have been tested in dunst and the GNOME notification daemon. Please report an issue if you can't get notifications in your notification server.