Gnome3.16 – fix missing input methods – regenerate locale

Source: http://forum.antergos.com/topic/2346/unable-to-add-keyboard-layout/8

Dealing with lost input sources from the “Region & Language” Settings screen – ended up finding the above referenced conversation.

In short:

PREPARE THE LOCALES:

Uncomment the locales you need in /et/locale.gen:

sudo nano /etc/locale.gen

For example Spanish (Spain) and Russian (Russia)

es_ES.UTF-8 UTF-8
ru_RU.UTF-8 UTF-8

Make sure to keep:

en_US.UTF-8 UTF-8

Make sure to save when exiting.

GENERATE UPDATED LOCALES

Generate the locales for system use:

sudo locale-gen

Changes will be immediately available in the Regions & Languages Settings window.

MAKE CHANGES IN REGIONS & LANGUAGES SETTINGS WINDOW