Ok, so I added the group I am in as an AdminIdentity in this file. However, in the language selector, the relevant buttons are still grayed out.
I am very confident that my change to /etc/polkit-1/localauthority.conf.d/ is right, because it actually changed something for the user account administration that is also part of gnome-control-center. Previously this would ask me for the root password, now I am able to unlock the settings there with my own password (or one of the other accounts in the new admin group). So this should work for the language selector, too.
Ok, so I added the group I am in as an AdminIdentity in this file. However, in the language selector, the relevant buttons are still grayed out.
I am very confident that my change to /etc/polkit- 1/localauthorit y.conf. d/ is right, because it actually changed something for the user account administration that is also part of gnome-control- center. Previously this would ask me for the root password, now I am able to unlock the settings there with my own password (or one of the other accounts in the new admin group). So this should work for the language selector, too.