After installing my brand new Kubuntu, I got the following error:
locale: Cannot set LC_ALL to default locale: No such file or directory perl: warning: Setting locale failed.
Here is how to fix it.
The first step is to see the current settings with
locale. This should give an output similar to the following:
> locale LANG=en_IE.UTF-8 LANGUAGE=en_US LC_CTYPE="en_DE.UTF-8" LC_NUMERIC=en_DE.UTF-8 LC_TIME=en_DE.UTF-8 LC_COLLATE="en_DE.UTF-8" LC_MONETARY=en_DE.UTF-8 LC_MESSAGES="en_DE.UTF-8" LC_PAPER=en_DE.UTF-8 LC_NAME=en_DE.UTF-8 LC_ADDRESS=en_DE.UTF-8 LC_TELEPHONE=en_DE.UTF-8 LC_MEASUREMENT=en_DE.UTF-8 LC_IDENTIFICATION=en_DE.UTF-8 LC_ALL=
This output already might give you a hint about what is wrong. In my case, I have the entry
en_DE which looks fishy. The next step is, to see what locales are installed on your machine. This is done with the parameter
> locale -a C C.UTF-8 en_GB.utf8 en_IE.utf8 en_US.utf8 en_ZA.utf8 POSIX
Here we already found the problem. The output does not contain the locale “en_DE”. In this case, it is because “en_DE” does not actually exist. I have no idea where it comes from. But somehow the combination of being in Germany and installing an English operating system caused it. So what I want to do is to set everything that has the wrong locale to the correct locale “de_DE” instead.
As the German locale is not installed on our system yet, we first have to create it. This is done with
> sudo locale-gen de_DE.utf8 Generating locales (this might take a while)... de_DE.UTF-8... done Generation complete.
Now we can set it as the default with the following:
sudo dpkg-reconfigure locales
You should restart the computer for the changes to take effect (just to be safe).