On Tuesday 11 September 2018 07:22:15 Stefan Krusche wrote:
> Good day everyone,
>
> is there a way to switch language setting for the GUI directly, i.e. not by
> clicking through TDE-Menu -> Trinity Control Center -> Regional & Access.
> -> Country/Region & Language -> Language List -> Move Up to have a
> particular program start with a different language? Something like TDE
> Keyboard Tool in Systray? Or via an command line option?
>
> Thanks.
>
>
> Kind regards,
> Stefan
>

This might help, if pertinent to your question: Have you tried localepurge? 
You can choose more precise language settings, and discard others that don't 
apply. (I count 15 choices under "de" for German, for example, 35 under "en" 
for English.) Most users will only want one or two items, such as "en" 
and "en-us-utf8". 

I assume that localepurge would also affect TDE, even though it is not 
TDE-specific software. Install that package, then run sudo dpkg-reconfigure 
localepurge, and you will get a list of locales. 

Otherwise, I would say TCC, etc., as you have already tried. 

Does this concern the problem from an earlier thread, about logging in using 
non-English characters (e.g., an umlaut), or is it a separate issue? 

Bill