Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//etc/acpi/events/asus-keyboard-backlight-up

 # /etc/acpi/events/asus-keyboard-backlight-up
# This is called when the user presses the key brightness 
# up button and calls /etc/acpi/asus-keyboard-backlight.sh for
# further processing.

event=hotkey ATKD 000000c4
action=/etc/acpi/asus-keyboard-backlight.sh up