Arch Linux

Xenfo

Member

From: Montreal, QC

Registered: 2021-11-06

Posts: 39

Website

Keyboard backlight doesn't work

❯ brightnessctl --list
Available devices:
Device 'intel_backlight' of class 'backlight':
        Current brightness: 6000 (5%)
        Max brightness: 120000

Device 'input24::capslock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'phy0-led' of class 'leds':
        Current brightness: 1 (100%)
        Max brightness: 1

Device 'input26::mute' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input3::numlock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'alienware::global_brightness' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 15

Device 'input24::numlock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input3::capslock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input24::scrolllock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input3::scrolllock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'dell::kbd_backlight' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 2

I have played around with dell:kbd_backlight and alienware::global_brightness to no avail. I've read through the wiki page but /sys/class/leds/tpacpi::kbd_backlight/max_brightness doesn't exist for me.

ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,360

Re: Keyboard backlight doesn't work

Just to rule it out, some (most?) laptops keyboard backlight brightness is directly controlled in firmware by Fn keys without using the OS as well, does that work for yours?

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Xenfo

Member

From: Montreal, QC

Registered: 2021-11-06

Posts: 39

Website

Re: Keyboard backlight doesn't work

No it doesn’t