How do I enable the keyboard backlight on aspire lite AL 15 41

Vijayvithal
Vijayvithal Member Posts: 11

Tinkerer

edited March 15 in Aspire Laptops

I purchased an aspire laptop yesterday and installed linux mint on it. The main reason for selecting this laptop was its backlit keyboard.

The backlight works when I am booting or using windows, but is always off under linux.

brightnessctrl does not list keyboard as a device

brightnessctl -l                                                                                                                                                                                                                       ─╯
Available devices:
Device 'amdgpu_bl1' of class 'backlight':
	Current brightness: 53 (21%)
	Max brightness: 255

Device 'enp2s0-0::lan' of class 'leds':
	Current brightness: 0 (0%)
	Max brightness: 255

Device 'input3::numlock' of class 'leds':
	Current brightness: 1 (100%)
	Max brightness: 1

Device 'enp2s0-2::lan' of class 'leds':
	Current brightness: 0 (0%)
	Max brightness: 255

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

Device 'enp2s0-1::lan' of class 'leds':
	Current brightness: 0 (0%)
	Max brightness: 255

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

Device 'mmc0::' of class 'leds':
	Current brightness: 0 (0%)
	Max brightness: 255

How do I enable the backlight?

Answers

  • Sharanji
    Sharanji ACE Posts: 5,052 Pathfinder

    @Vijayvithal

    The keyboard settings has the answer (keyboard -> shortcuts -> system -> hardware). There are 3 settings for the keyboard there. Just click on one under the setting, and enter whatever combination you desire.

    I hope this helps! If this was useful, please hit 'Yes' or 'Like'! Thanks! 😊

  • Vijayvithal
    Vijayvithal Member Posts: 11

    Tinkerer

    edited March 21

    Adding the following to the /etc/default/grub file resolved the issue. The keys for backlight are working now.

    GRUB_CMDLINE_LINUX="acpi_osi=Linux acpi_backlight=Vendor" 
    
  • Axxo
    Axxo Member, Ally Posts: 1,535

    To enable the keyboard backlight on your Acer Aspire Lite AL15-41, look for a key with a keyboard and lightbulb symbol (often F8, F9, or F10) and press the Fn key + that key.