[Freeipa-users] Authenticate on GNOME display manager with freeipa

[Jason B. Nance]

> But I cannot login to the GNOME 3 Desktop on the client. I used the
> netinstall ISO image of Ubuntu. During installation, I have chose
> "Ubuntu GNOME Desktop" as the only desktop.
> 
> So my display manager is gdm3.

It sounds as if GDM has its own PAM module that isn't configured to use SSSD.  Check out /etc/pam.d/gdm or similar and see if it includes the "common-*" modules (and verify that they include the SSSD libraries in their stacks).  You can compare it to the SSH module.

Regards,

j