How to Fix SetLocale en_US.UTF-8 Error - SteamOS
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In this video I show you how to fix the error message people using Valve's SteamOS outside the US receive when trying to play Valve games and some other games.
The issue is caused by a missing Locale in the the file /etc/locale.gen
In terminal type sudo nano /etc/locale.gen
Change the Line:
en_US.UTF8 UTF-8
to
en_US.UTF8 UTF-8
(remove the #)
Quit out of nano by hitting ctrl and x
Y to save and enter to confirm.
Now type:
sudo locale-gen
Then reboot SteamOS. You should now be able to play Valve games again.