OK so some initial steps:
-
Edit
/etc/locale.gen
and make sure the locales you want are uncommented (e.g.de_BE.UTF-8 UTF-8 ... en_US.UTF-8 UTF-8
(keeping en_US enabled can help with certain software).
-
Run
sudo locale-gen
and verify the same locales you uncommented are being generated. -
Check the contents of
/etc/locale.conf
and set it to theLANG
you want. The only contents in mine is:LANG=en_GB.UTF-8
Note that this is the first part of the line in
locale.conf
-
Reboot for good measure.
If the issue persists then check the settings within your DE and within Garuda Settings Manager.