Hi, in my case the test is on a Rock64 (4GB, v2 edition) using latest current Buster or Focal.
The problem is in the first init configuration assistant. When selecting the "User language based on your location", after selecting es_AR.UTF-8 (I am from Argentina) it "auto-detects" my keyboard layout as AR which belongs to Arabic iirc (which is wrong). After this of course I can't type anything right on terminal. I had to fix it over ssh by issuing the command: sudo dpkg-reconfigure keyboard-configuration.
Prakhar Vasishtha reacted to Gustavo A. Díaz in Wrong keyboard layout auto assignment on first init - Ubuntu/Debian current image