When try to change language in /home/.kde will be created a env folder wich have a file setlocale.env with incorect information about language.
Orasis Do this: sudo nano /home/your_username/.kde/env/setlocale.sh Correct all from file the same For example if you want el_GR setlocale.sh need to be this, and save it export LANG=el_GR.UTF-8 export LANGUAGE=el_GR export LC_NUMERIC=el_GR.UTF-8 export LC_TIME=el_GR.UTF-8 export LC_MONETARY=el_GR.UTF-8 export LC_PAPER=el_GR.UTF-8 export LC_IDENTIFICATION=el_GR.UTF-8 export LC_NAME=el_GR.UTF-8 export LC_ADDRESS=el_GR.UTF-8 export LC_TELEPHONE=el_GR.UTF-8 export LC_MEASUREMENT=el_GR.UTF-8 Then run in Terminal (Konsole) sudo sh /home/your_username/.kde/env/setlocale.sh Now if you type "locale" in Terminal will be no error Also if you need to have all menu aplications translated you ned to do this sudo nano /etc/default/locale Paste and save LANG="el_GR.UTF-8" LC_NUMERIC="el_GR.UTF-8" LC_TIME="el_GR.UTF-8" LC_MONETARY="el_GR.UTF-8" LC_PAPER="el_GR.UTF-8" LC_NAME="el_GR.UTF-8" LC_ADDRESS="el_GR.UTF-8" LC_TELEPHONE="el_GR.UTF-8" LC_MEASUREMENT="el_GR.UTF-8" LC_IDENTIFICATION="el_GR.UTF-8" Reboot your PC. After restart a popup notification will be displayed with this message Incomplete language .....press on it and install missing files. That is -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kde-runtime in Ubuntu. https://bugs.launchpad.net/bugs/1322968 Title: Changing country leads to invalid locale To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kde-runtime/+bug/1322968/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs