It did not break here, but I do see some new errors about the session.
root@imerabox:/# apt-cache policy policykit-1
policykit-1:
Installed: 0.112-5.2
Candidate: 0.112-5.2
Version table:
*** 0.112-5.2 0
500 ftp://ftp.gtlib.gatech.edu/pub/siduction/extra/ unstable/main amd64 Packages
100 /var/lib/dpkg/status
0.105-8 0
500 http://http.debian.net/debian/ unstable/main amd64 Packages
root@imerabox:/# systemctl status lightdm
● lightdm.service - Light Display Manager
Loaded: loaded (/lib/systemd/system/lightdm.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2015-06-24 10:14:44 EDT; 3h 48min ago
Docs: man:lightdm(1)
Process: 17024 ExecStartPre=/bin/sh -c [ "$(cat /etc/X11/default-display-manager 2>/dev/null)" = "/usr/sbin/lightdm" ] (code=exited, status=0/SUCCESS)
Main PID: 17028 (lightdm)
CGroup: /system.slice/lightdm.service
├─17028 /usr/sbin/lightdm
├─17033 /usr/bin/X :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
└─17063 ssh-agent
Jun 24 10:14:44 imerabox systemd[1]: Starting Light Display Manager...
Jun 24 10:14:44 imerabox lightdm[17028]: ** (lightdm:17028): WARNING **: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.Servi...ervice files
Jun 24 10:14:44 imerabox systemd[1]: Started Light Display Manager.
Jun 24 10:14:44 imerabox lightdm[17028]: ** (lightdm:17028): CRITICAL **: session_get_login1_session_id: assertion 'session != NULL' failed
Jun 24 10:14:44 imerabox lightdm[17028]: ** (lightdm:17028): CRITICAL **: session_get_login1_session_id: assertion 'session != NULL' failed
Jun 24 10:14:44 imerabox lightdm[17028]: ** (lightdm:17028): CRITICAL **: session_get_login1_session_id: assertion 'session != NULL' failed
Jun 24 10:14:45 imerabox lightdm[17028]: ** (process:17057): WARNING **: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.Servi...ervice files
Jun 24 10:14:45 imerabox lightdm[17057]: pam_unix(lightdm-autologin:session): session opened for user don by (uid=0)Hint: Some lines were ellipsized, use -l to show in full.