Be aware that if ${HOME} is mounted over NFS and that doesn't allow root the 'usual' arbitrary access to files then GDM will fail to fully access ~/.Xauthority and fallback to the /tmp/.gdm<random> file. This is because for some such accesses it uses uid/gid 0, despite the fact that it does switch to the user's uid/gid for initial filechecks and creation of ~/.Xauthority if needed.
It might be a bug that it uses uid/gid 0 for that later access given if it is root it should be able to switch to the user again as needed, and it does indeed switch for the initial checks/creation. For now I'm going to investigate why my NFS mounts aren't allowing arbitrary root access so I can get back to ~/.Xauthority. -Ath -- - Athanasius = Athanasius(at)miggy.org / http://www.miggy.org/ Finger athan(at)fysh.org for PGP key "And it's me who is my enemy. Me who beats me up. Me who makes the monsters. Me who strips my confidence." Paula Cole - ME
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