I ever dislike the keyboards with lights, today after firmware update on my NS5x_NS7xPU the keyboard..become "with backlight". How to turn off? I have tried this command as root
sh -c "echo 0 > /sys/class/leds/system76_acpi::kbd_backlight/max_brightness"
sh: line 1: /sys/class/leds/system76_acpi::kbd_backlight/max_brightness: Permission denied
When I press fn+f7 it appear a "monitor configuration" of Xfce4
When I run this command
echo 0 > /sys/class/leds/system76_acpi\:\:kbd_backlight/brightness
the keyboard backlight is still on,
max_brightnessis the maximum brightness that you could set. It's not the thing you set.