Comment 6 for bug 803858

There several assumptions in the above list which cannot be taken as given:

1) the users language preference in known and can be easily set at the time an account is created
2) there is an user interface in the desktop environment to select the language of a session
3) every user of the system will be able to navigate in the system's default language to this interface in order to change it to his preferred/native language

The first assumption is Ubuntu-specific, e.g. it is currently not possible to select the preferred language when creating users through YaST in openSUSE. E.g. in a large computer lab an admin creating accounts may not know what languages a user speaks. The second assumption is GNOME/KDE-centric, there is e.g. no native UI to switch the user's language in Xfce, LXDE, or when using a plain window manager. Even if there is, it will be very difficult for a user to find it if he/she does not understand the default language.

Use cases where this becomes a problem are e.g. computer labs in public libraries or universities and even in my own household where not everyone speaks the preferred/native language of the owner of each computer.

So I support the request to add this functionality back to LightDM.