Am Montag, den 27.02.2012, 14:30 +0000 schrieb David Biesack: 
> Can someone describe what "You need a policykit agent in your custom x 
> session" means - how does one achieve this? I'm not having much luck finding 
> documentation/guides on this.
> 'apt-get upgrade' from a console window works for me but update-manager still 
> fails.
> 
> Or better yet, is there a guide for "missing" components that one should
> add in a bare xsession in order to get essential features working like
> update-manager.

This is a little bit off topic. It could be useful to launch the
following services in our .Xsession. It is up to you to decide what you
want or not:

eval `dbus-launch --sh-syntax --exit-with-session`
gnome-settings-daemon # themes, resolutions ...
gnome-power-manager
/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1
nm-applet # if you are using network manager
eval `gnome-keyring-daemon`  # for passwords
/usr/lib/seahorse/seahorse-ssh-askpass
update-notifier

AFAIK update-manager requires the session dbus service and the polkit
agent.

http://awesome.naquadah.org/wiki/Quickly_Setting_up_Awesome_with_Gnome

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https://bugs.launchpad.net/bugs/819328

Title:
  [Oneiric] update-manager crashed with DBusException in _run():
  org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible
  causes include: the remote application did not send a reply, the
  message bus security policy blocked the reply, the reply timeout
  expired, or the network connection was broken.

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