Comment # 8 on bug 1158708 from Stefan Hundhammer

Those translations are provided by package "desktop-translations".
Please check if you have it installed:

  rpm -qa desktop-translations

Check the content of that package for your language:

  rpm -ql desktop-translations | grep lt
->
  /usr/share/locale/lt/LC_MESSAGES/desktop_translations.mo
  /usr/share/locale/lt/LC_MESSAGES/polkit-action-distro-translations.mo


I have desktop-translations-84.87.20190924.7050555c-1.1.noarch from the latest
Tumbleweed installed, and I can see Lithuanian (and German and Italian etc.)
translations in the YaST Qt control center for all modules.


Please try to invoke the YaST Qt control center manually:

as yourself (you will only see very few modules, that's normal):


  LC_MESSAGES=lt_LT.UTF-8 /usr/lib/YaST2/bin/y2controlcenter

as root:

just once:
  xhost +

then:
  sudo LC_MESSAGES=lt_LT.UTF-8 /usr/lib/YaST2/bin/y2controlcenter

I see everything translated to Lithuanian.

Please notice that it works with "lt_LT", "lt_LT.utf8", "lt_LT.UTF-8", but not
with just "lt" (?!?).