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

Antoine Sirinelli antoine at monte-stello.com
Fri Jul 13 09:29:24 UTC 2012


On Fri, 2012-07-13 at 10:18 +0200, Josselin Mouette wrote:
> Can you enable debugging and try again?
> In /etc/gdm3/daemon.conf, uncomment Enable=true in the debug section.

Thanks for the hint. I am now able to see what is going wrong.
In :0-sloave.log, I have now the following blocking lines:

[...]
gdm-welcome][7146]: DEBUG(+): GdmSessionWorker: saving account details
for user Debian-gdm
gdm-welcome][7146]: AccountsService-DEBUG(+): ActUserManager: user
Debian-gdm changed
gdm-welcome][7146]: DEBUG(+): GdmSessionWorker: attempting to change
state to SESSION_OPENED
gdm-welcome][7146]: pam_unix(gdm-welcome:session): session opened for
user Debian-gdm by (uid=0)
gdm-welcome][7146]: DEBUG(+): GdmSessionWorker: 1 new messages received
from PAM

gdm-welcome][7146]: DEBUG(+): GdmSessionWorker: username is 'Debian-gdm'
gdm-welcome][7146]: DEBUG(+): GdmSessionWorker:
old-username='Debian-gdm' new-username='Debian-gdm'
gdm-welcome][7146]: DEBUG(+): GdmSessionWorker: received pam message of
type 1 with payload 'reenter password for pam_mount:'
gdm-welcome][7146]: DEBUG(+): GdmSessionWorker: Calling SecretInfoQuery
gdm-simple-slave[7124]: DEBUG(+): GdmSessionDirect: got message
gdm-simple-slave[7124]: DEBUG(+): session_message_handler:
destination=(null) obj_path=/org/gnome/DisplayManager/Session
interface=org.gnome.DisplayManager.Session method=SecretInfoQuery
gdm-simple-slave[7124]: DEBUG(+): GdmSessionDirect: Emitting
'secret-info-query' signal

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.

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

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

Many thanks,

Antoine







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