Francis:
I have a strange behavior, maybe someone already saw it. When using pam_ldap or pam_winbind by XDMCP, and entering a wrong credential, GDM doesn't display the standard message "wrong username or passord". In place of that, the greeter reset completely and reloads, as if CTRL-ALT-Backspace was pressed. How can I do the debug of that? Have a nice day,
That is odd. Try running gdmsetup, and turning on debug by checking the checkbox in the Security tab. Then restart gdm by running gdm-restart as root (this will cause any running sessions to exit so don't run it with unsaved data in your running session). Then share with us the "gdm" related messages that get sent to your syslog (/var/adm/messages or /var/log/messages) file. This will probably highlight the problem. Normally when the greeter restarts, it is because there was a crash. Is there a core file in your root (/) directory, or in /var/lib/gdm or /var/lib/log/gdm? Sometimes gdm will leave core files here that we can check for a stacktrace. Brian