[Bug 33132] Re: GDM cannot write to authorisation file

[Melissa Draper]

I no longer have the problem, but the exact wording is still on a piece of paper here on my desk ;)

"User's $HOME /.dmrc file is being ignored. This prevents the default session and language from being saved. Fle should be owned by user and have 644 permissions.  User's $HOME directory must be owned by user and not writable by other users"

There is a good chance something may have been launched with sudo instead of gksudo.
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GDM cannot write to authorisation file
https://launchpad.net/malone/bugs/33132