Probao sam sve navedene primjere za password i još neke vjerojatnije (passwd, PASSWD, toor, TOOR, root, ROOT, admin, ADMIN, administrator, ADMINISTRATOR, password, PASSWORD), ali ne radi niti jedan. Upisujem u "Run as root - KDE su". Za Command mi piše "kcmshell kde-clock.desktop --embed 31459420 --lang en_US".
Našao sam u "Run Command" pod "Options" stavku "Run as a different user" gdje je username upisan (root), a password je prazan.