Could not update .ICEauthority file /var/lib/gdm3/.ICEauthorityI have resolved this problem by simply removing that file and let gdm3 daemon re-create it. The commands below must be executed with root privileges.
/etc/init.d/gdm3 stop rm /var/lib/gdm3/.ICEauthority* /etc/init.d/gdm3 startNote, restarting gdm not helps all the time, so try reboot computer instead.