I just install ubuntu 21.10 on my AsusUM462D laptop.
I have problem, when close the laptop, or after the screen goes black, I can not access the menu. Nothing happen when I click those square dots, or type at the search box.
so, I have to log out, and log in again and open all the windows that are left.
Your laptop has gone into sleep or hibernate
Go into Settings and find where it controls sleep or hibernate, and turn it off. It is usually under Power settings, but I am not sure because I do not have Ubuntu.
Regards
Neville