In any case I think that the claim in the bug summary and description is not correct. I just tested with a password including both € and ö and could log in using GDM just fine.
@Franck: I suspect that some other keyboard layout but the one you expect is enabled for the login screen. Can you please let us know what these two terminal commands output: cat /etc/default/keyboard gsettings get org.gnome.desktop.input-sources sources Also, to easier be able to guide you if needed, can you please let us know if you are using a one user system or if more than one user account have been created. ** Changed in: gdm3 (Ubuntu) Status: Confirmed => Invalid ** Changed in: gnome-control-center (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1716159 Title: gdm greeter does not allow non-US characters (like euro character €) when typing password To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716159/+subscriptions -- desktop-bugs mailing list email@example.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs