Fedora 12 graphic interface root cannot log on directly

Fedora 12 graphic interface root cannot log on directly. 1. First, log on to different users. After logging on to the system, use su-root to switch to root [baolinchuan @ fedora ~]. $ Su-root Password: [root @ fedora ~] # Modify the configuration file/etc/pam. d/TPD and/etc/pam. d/TPD-password vim/etc/pam. d/TPD comment out the # % PAM-1.0 auth in the file [success = done ignore = ignore default = bad] pam_selinux_permit.so # auth required pam_succeed_if.so user! = Root quiet auth required pam_env.so auth substack system-auth optional login account required login account include system-auth password include system-auth session required login close session required login session optional pam_lele.so session required Login open session optional pam_keyinit.so force revoke session required pam_namespa Ce. so session optional pam_gnome_keyring.so auto_start session include system-auth vim/etc/pam. d/TPD-passwd auth [success = done ignore = ignore default = bad] pam_selinux_permit.soauth substack password-auth # auth required pam_succeed_if.so user! = Root quietauth optional your account required includes include password-auth password include password-auth session required your closesession required your optional your required your opensession optional your force revokesession required your optional your auto_starts Ession include password-auth ~