Comment 5 for bug 1810619

This is because this change gets included:
commit 684bec1092b6991ff2a7751e8a763898576eb5c2
Author: Daniel Drake <email address hidden>
Date: Mon Oct 1 15:55:22 2018 -0700

    Input: i8042 - enable keyboard wakeups by default when s2idle is used

    Previously, on typical consumer laptops, pressing a key on the keyboard
    when the system is in suspend would cause it to wake up (default or
    unconditional behaviour). This happens because the EC generates a SCI
    interrupt in this scenario.

    That is no longer true on modern laptops based on Intel WhiskeyLake,
    including Acer Swift SF314-55G, Asus UX333FA, Asus UX433FN and Asus
    UX533FD. We confirmed with Asus EC engineers that the "Modern Standby"
    design has been modified so that the EC no longer generates a SCI
    in this case; the keyboard controller itself should be used for wakeup.

    In order to retain the standard behaviour of being able to use the
    keyboard to wake up the system, enable serio wakeups by default on
    platforms that are using s2idle.

This change makes the keyboard wakeup behavior in aligned with other major OS (i.e. Windows and macOS).

This can be changed to the "old" behavior by the following:
# echo disabled > /sys/bus/serio/devices/serio0/power/wakeup