You are not logged in.
After the Gnome 3.2 update, I began to get the following error preventing me from logging in via GDM:
"Cannot update .ICEauthority file /home/{user}/.ICEauthority"
This is on an up-to-date x64 system with an encrypted home directory that auto-mounts at login via ecryptfs. Several users have reported similar problems when the permissions of the ~/.ICEauthority file get messed up, but in my case the permission were correct. After some monkeying around, I learned that if I logged in via a terminal first, then I could login with GDM properly. This led me to suspect that the auto-mount of my encrypted home directory wasn't working properly with GDM.
I finally found a solution thanks to updated instructions on the Archwiki. The GDM update created a new file /etc/pam.d/gdm-password which must have pam_ecryptfs entries added to it in order for auto-mount to work right. For the sake of keeping a clean installation, I also removed the pam_ecryptfs entries from /etc/pam.d/gdm (the old location for these entries). Now login and auto-mount of the encrypted directory work as expected.
I had a hard time connecting the Gnome 3.2 update with ecryptfs and .ICEauthority problems, so I'm posting this in case it helps someone else.
Offline