Brightness control key not functioning after install

General system Kernel, boot, graphics & hardware
1

First of all, kudos to endeavour os team, this is the only arch based linux distro whose internet speed is up to mark for my laptop.
The issue I’m facing is when I was surfing around live iso the brightness was easily controlled by function keys. But after installing the os the brightness keys don’t work anymore. Can anybody solve this issue, because I do not want to leave endeavour os.

2

Welcome to the forum @ambientgj ,
You have installed Plasma I presume. Depending on BIOS settings
Fn+F11 decreases and Fn+F12 increases brightness with me.
Anyhow you may install
yay -S brightnessctl
and add shortcuts to these commands

 brightnessctl s 5%-
 brightnessctl s 5%+

brightnessctl_aux
brightnessctl_aux1841×1044 170 KB

3

Thank you for replying, as my laptop is almost a decade old I’m not using the latest endeavour os version(gemini) rather I use endeavour os Artemis that comes with a xfce desktop

4

@ambientgj
Then making shortcuts is like that:
Super + space keyboard 2nd tab

5

sorry i was not being specific, control keys are not the prime issue, the main issue is that the brightness changing commands do not work, or i can say i am unable to change brightness

6

@ambientgj show me the output of
brightnessctl -l

7

Here is the output :-

Available devices:
Device 'acpi_video0' of class 'backlight':
	Current brightness: 7 (78%)
	Max brightness: 9

Device 'input4::capslock' of class 'leds':
	Current brightness: 0 (0%)
	Max brightness: 1

Device 'input4::scrolllock' of class 'leds':
	Current brightness: 0 (0%)
	Max brightness: 1

Device 'input4::numlock' of class 'leds':
	Current brightness: 1 (100%)
	Max brightness: 1
8

@ambientgj So,
brightnessctl s 9
should be the maximum value.
brightnessctl set 50%
Read
man brightnessctl

9

Output of brightnessctl s 9:-

$ brightnessctl s 9
Updated device 'acpi_video0':
Device 'acpi_video0' of class 'backlight':
	Current brightness: 9 (100%)
	Max brightness: 9

Output of brightnessctl set 50%:-

$ brightnessctl set 50%
Updated device 'acpi_video0':
Device 'acpi_video0' of class 'backlight':
	Current brightness: 5 (56%)
	Max brightness: 9

No change in screen brightness.
Read man brightnessctl nothing helped