<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> I just built a fresh Fedora Core 1 box the other day and I was having exactly the same issue with it. After googling around for a few hours, I found quite a few people asking for help on this one, but nobody seems to have provided an answer. One thing that alot of people seemed to get as well in /var/log/messages was gdm-binary: Couldn't set acct. mgmt for $USERNAME Anyway, I started getting desperate to try anything, so I put the full path to the pam modules in /etc/pam.d/gdm eg. auth sufficient pam_ldap.so becomes auth sufficient /lib/security/pam_ldap.so And that fixed it. I've tested this on two workstations now with multiple user accounts and it seems to be all working. Edward Howe wrote: <blockquote cite="mid1449196E-99F5-11D8-9089-000393C1D77C@jimmy.harvard.edu" type="cite">For some reason, I can't get GDM to authenticate using LDAP through PAM... I'm not exactly sure what's going on, but authentication via SSH/terminal login works perfectly fine; GDM is the only one to give me any problems. Anyone have any insight as to why this might be? Included is a copy of my /etc/pam.d/gdm file at the bottom of the email. Thanks in advance. =) - Edward Howe - Frontier Science, Inc. - - - - - - - - - snip - - - - - - - - - #%PAM-1.0 auth sufficient pam_ldap.so auth required pam_nologin.so auth required pam_env.so auth required pam_unix_auth.so account sufficient pam_ldap.so account required pam_unix_acct.so password required pam_ldap.so session sufficient pam_ldap.so session required pam_unix_session.so </blockquote> </body> </html>