Bug#681282: gdm3: gdm does not start the login window

[Josselin Mouette]

Le vendredi 13 juillet 2012 à 10:29 +0100, Antoine Sirinelli a écrit : 
> By disabling pam_mount in /etc/pam.d/common-auth
> and /etc/pam.d/common-session I am now able to get the greeter back and
> to log in normally.
> 
> The problem is that gdm is starting a session for Debian-gdm user and
> pam_mount request a password in order to mount the cifs network drive in
> its home directory.

Indeed, and you would have the same problem with autologin (the greeter
session uses the same PAM file).

> Do you have an idea how I could still have normal user mounting
> automatically their network drive and Debian-gdm excluded from this
> feature?

You can add references to pam_mount only in /etc/pam.d/gdm3 instead of
common-*. 

Alternatively you can leave the mounting to GNOME. With gvfs-fuse
installed, you can have a gvfs mount accessible from all applications,
and the password stored securely in the keyring without the need to type
it every time.

In all cases there is clearly a bug in the gdm3/pam_mount interaction.

> BTW, I do not know if it is a gdm or a pam_mount bug.

I’m no PAM expert but I find it weird that pam_mount can ask a password
in an “account” or “session” stanza.  The autologin/greeter PAM file
disables all auth stanzas, so I expected that no password would ever be
required.

I think it would be better if libpam-mount did not ask any password
outside of “auth” stanzas.

CCing the libpam-mount maintainer for his opinion.

Cheers,
-- 
 .''`.      Josselin Mouette
: :' :
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