display managers. This was broken due to a change in ConsoleKit
0.4.2:
https://bugs.freedesktop.org/show_bug.cgi?id=28377
Using ConsoleKit's pam-ck-connector helps in that it creates local
sessions; however, they're not marked as active because the
x11-display-device property is not set. As a workaround, calling
ck-launch-session seems to work.
More details:
https://bugs.gentoo.org/show_bug.cgi?id=336634
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598150
https://bugzilla.redhat.com/show_bug.cgi?id=585952
svn path=/nixos/trunk/; revision=28400