[DESKTOP] Problem setting the language to german

[Janvl]

Hi,

I have installed Kubuntu in german but after adding thunderbird and firefox, I found thunderbird to be in english.
Then I tampered with the locale and now I cannot set the systemlanguage to german again.

whatever I do, after I give "locale" in a terminal, I get

locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_AT.UTF-8
LANGUAGE=de:en_US
LC_CTYPE="en_AT.UTF-8"
LC_NUMERIC=de_AT.UTF-8
LC_TIME=de_AT.UTF-8
LC_COLLATE="en_AT.UTF-8"
LC_MONETARY=de_AT.UTF-8
LC_MESSAGES="en_AT.UTF-8"
LC_PAPER="en_AT.UTF-8"
LC_NAME="en_AT.UTF-8"
LC_ADDRESS="en_AT.UTF-8"
LC_TELEPHONE="en_AT.UTF-8"
LC_MEASUREMENT=de_AT.UTF-8
LC_IDENTIFICATION="en_AT.UTF-8"
LC_ALL=

I do not have a locale called en_AT, cannot explain from where it came.

Does anyone have an idea on how to reset the system to de_AT.UTF-8
so that all programs use german like on my 16.04 desktop.

trying to re-install with synaptics gives

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "de:en_US",
LC_ALL = (unset),
LC_TIME = "de_AT.UTF-8",
LC_MONETARY = "de_AT.UTF-8",
LC_NUMERIC = "de_AT.UTF-8",
LANG = "en_AT.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
debconf: unable to initialize frontend: Gnome
debconf: (Can't locate Gtk3.pm in @INC (you may need to install the Gtk3 module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.26.1 /usr/local/share/perl/5.26.1 /usr/lib/x86_64-linux-gnu/perl5/5.26 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.26 /usr/share/perl/5.26 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at /usr/share/perl5/Debconf/FrontEnd/Gnome.pm line 151, <> line 3.)
debconf: falling back to frontend: Dialog
debconf: unable to initialize frontend: Dialog
debconf: (TERM is not set, so the dialog frontend is not usable.)
debconf: falling back to frontend: Readline
(Reading database ... 267059 files and directories currently installed.)
Preparing to unpack .../language-pack-de_1%3a18.04+20180712_all.deb ...
Unpacking language-pack-de (1:18.04+20180712) over (1:18.04+20180712) ...
Preparing to unpack .../language-pack-kde-de_1%3a14.04+20140305.0ubuntu1_all.deb ...
Unpacking language-pack-kde-de (1:14.04+20140305.0ubuntu1) over (1:14.04+20140305.0ubuntu1) ...
Preparing to unpack .../kde-l10n-de_4%3a17.08.3-0ubuntu4_all.deb ...
Unpacking kde-l10n-de (4:17.08.3-0ubuntu4) over (4:17.08.3-0ubuntu4) ...
Setting up kde-l10n-de (4:17.08.3-0ubuntu4) ...
Processing triggers for man-db (2.8.3-2) ...
Setting up language-pack-de (1:18.04+20180712) ...
Setting up language-pack-kde-de (1:14.04+20140305.0ubuntu1) ...

--------------------------------------------------------------------------------------

Even if I have to install new, that is no problem.
I would like to demonstrate to some normal users how easy it is to use linux.
I never before had trouble to set the language, so I guess I just oversee what must be done.

Regards,
Jan

[Janvl]

The Problem seems to be in:

home/.config/plasma-locale-settings.sh

# Generated script, do not edit
# Exports language-format specific env vars from startkde.
# This script has been generated from kcmshell5 formats.
# It will automatically be overwritten from there.
export LANG=en_AT.UTF-8
export LC_NUMERIC=de_AT.UTF-8
export LC_TIME=de_AT.UTF-8
export LC_MONETARY=de_AT.UTF-8
export LC_MEASUREMENT=de_AT.UTF-8
export LANGUAGE=de:en_US

Now I just need to figure out where this script is generated . . . . . . .

[Janvl]

Solved!

in KDE I just had to choose

Systemsettings - Formats
and set the Region to Germany de_DE

That was where "en_AT" was entered (I do not understand why it is there anyway),
after changing that and logging off and on I had german back in all programs.

Regards,
Jan