How to configure Switching keyboard layouts in Ubuntu 20.04 LTS on Alt + Shift?
Answer 1, Authority 100%
Set GNOME-TWEAKS (if not changed gnome on xfce or something else) and then find the section
Keyboard & amp; Mouse , click
Additional Layout Options Open the
Switching to Another Layout , put the “bird” (just in case there is a separate item for left ALT kbd>and SHIFT kbd>) and finally do restart.