I'm having the same problem - autologin doesn't work on a rather freshly installed (beginning of august) and up2date dapper.
I used to have: AutomaticLoginEnable=true AutomaticLogin=jan in /etc/gdm/gdm.conf - not having read the comments about gdm.conf-custom ;) But then I reverted this to factory-gdm.conf and made the adjustments in gdm.conf-custom (using gdmsetup), now showing the above entries under the [daemon] section and also setting debug. What is interesting, is, that when I do "/etc/init.d/gdm restart" the user does get logged in automatically - never works on bootup, allways works with restart. While gdm was still sitting there, as if there wasn't an autologin specified, /var/log/messages said nothing about gdm (the last entries being about bluetooth and agpgart, still from booting) but /var/log/syslog contains (jan being the user to be logged in): Sep 3 14:19:08 albatros gdm[4214]: set config key daemon/AutomaticLogin to string jan and ends as follows: Sep 3 14:19:34 albatros gdm[4685]: gdm_slave_wait_for_login: In loop Then, after the "/etc/init.d/gdm restart", /var/log/syslog goes on: Sep 3 14:25:53 albatros gdm[4232]: mainloop_sig_callback: Got signal 15 some more lines, then a lot of "set config key" entries, containing: Sep 3 14:25:53 albatros gdm[5071]: set config key daemon/AutomaticLogin to string jan and finally: Sep 3 14:25:53 albatros gdm[5073]: gdm_main: Here we go... and on, all looking good to me. I attach the whole /var/log/syslog. Another bug about failed autologin (but only on 2nd, 3rd... xserver, so it might be unrelated) is #56035 (with workaround) ** Changed in: gdm (Ubuntu) Status: Needs Info => Confirmed -- autologin didn't work https://launchpad.net/bugs/45107 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs