If you have an error reporting that the selected locale is missing, like I did, you can fix it with the following commands. I had this kind of error recurring on some actions (like at VNC server start), it didn't block anything, but was annoying. locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Type: Code: locale and find your locale: Code: LANGUAGE= LC_CTYPE="it_IT.UTF-8" LC_NUMERIC="it_IT.UTF-8" LC_TIME="it_IT.UTF-8" LC_COLLATE="it_IT.UTF-8" ... then type: sudo locale-gen <your locale> in my case: Code: sudo locale-gen it_IT.UTF-8 then Code: sudo dpkg-reconfigure locales That should be all. Source: http://askubuntu.com/questions/162391/how-do-i-fix-my-locale-issue UDOO rocks.
This did the trick for me on Ubuntu 12.04 v2: apt-get install language-pack-en export LANGUAGE=en_US.UTF-8 export LANG=en_US.UTF-8 export LC_ALL=en_US.UTF-8 locale-gen en_US.UTF-8 dpkg-reconfigure locales
As a third alternative, this worked for me: sudo apt-get install --reinstall language-pack-en . I don't know if I needed the sudo . I don't know if you need to choose the pack for your own language. It seemed to install a lot of languages other than english for me.