Current greeter PAM-configuration.
#%PAM-1.0
auth required pam_securetty.so
auth requisite pam_nologin.so
auth include system-local-login
auth optional pam_gnome_keyring.so
account include system-local-login
session include system-local-login
session optional pam_gnome_keyring.so auto_start
Following lines are needed to open gnome-keyring automatically
auth optional pam_gnome_keyring.so
session optional pam_gnome_keyring.so auto_start