How to change the Avatar picture of the root user in KDE Plasma?

Problem

When I go to the user manager window of KDE (GUI) - there is no option to select the root user in order to change its avatar to another one. Now I tried making a new user and giving it a custom avatar via the user manager window of KDE, and it works, however for the root user it seems I cannot change its avatar.

I am using

The avatar picture I am using is of 256x256 px size and is of .PNG format. I renamed the file as root.face.icon.

Methods I have tried but didn't work

1. Put the avatar file in /usr/share/sddm/faces.

2. Put the file in /root (root's home folder).

3. Create a file called avatars.conf, and add the line below to /etc/sddm.conf.d/avatars.conf:

Links

• wiki.archlinux.org/index.php

• superuser.com/questions/685261/changing-kde-user-avatar