Search notes:

/etc/default/keyboard

The keyboard configuration file. It describes the properties of the keyboard.

Sample configuration file:

XKBMODEL="pc105"
XKBLAYOUT="us"
XKBVARIANT=""
XKBOPTIONS=""

BACKSPACE="guess"

XKBMODEL specifies the keyboard model name. Default is pc105. See /usr/share/X11/xkb/rules/xorg.lst

Apparently, this file is not present in an Arch distribution.

The keyboard file is read by setupcon.

See also