Laptop keyboard doesn't work after suspension/hibernation

On my Ubuntu 20.04 (problem persists since 16.04) Sony VAIO laptop if I close the lid, wait till the yellow led to blink and then turn the laptop on again, awakes everything but keyboard, which turns on it's backlight after first keypress but doesn't react to anything, so does the touchpad. So I get almost fully working system, but completely unusuable. My problem is that I don't even know where to search for problem origin. I don't know how the laptop power and keyboard management works in Ubuntu, not on systemd or SysV level, nor on kernel level. So, no logs for you, my friends, until you ask for any. =) How can I solve this very annoying issue please?