Having this issue when using Garuda Welcome Refresh mirrorlist (Reflector-Simple)

[BluishHumility]

Make sure the locales you need are uncommented in /etc/locale.gen, then regenerate locales:

sudo locale-gen

See also these similar posts:

Setting locale failed

In my opinion this could be caused by either Make sure they are both enabled (search them in the file an remove the # comment, if present) in: /etc/locale.gen And re-generate locales: sudo locale-gen

Problem with locale in terminal

First, run sudo bash to enter a root bash session. Then execute the following commands: echo -e "cs_CZ.UTF-8 UTF-8\nen_US.UTF-8 UTF-8\nen_GB.UTF-8 UTF-8" > /etc/locale.gen locale-gen That should fix your language settings for now. Reboot and check if your system is still in franken-english or not for me please.

Locale settings defined outside /etc/locale.conf

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 the LANG 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 meas…

The last one especially is a good step-by-step for how to set up your locales.