Install xkb-data by entering the following commands in the terminal:
sudo apt update sudo apt install xkb-data
Description:
X Keyboard Extension (XKB) configuration data
This package contains configuration data used by the X Keyboard Extension (XKB), which allows selection of keyboard layouts when using a graphical interface. . Every X11 vendor provides its own XKB data files, so keyboard layout designers have to send their layouts to several places. The xkeyboard-config project has been launched at FreeDesktop in order to provide a central repository that could be used by all vendors.
Homepage: https://www.freedesktop.org/Software/XKeyboardConfig
Version: 2.23.1-1ubuntu1
Section: x11