ubuntu-system-settings-sound-gsettings-to-accountsservice.py crashed with dbus.exceptions.DBusException in __new__(): org.freedesktop.DBus.Error.FileNotFound: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory

[Walter Garcia-Fontes]

I'm having problems with my nvidia settings and after a reboot I got this crash

ProblemType: Crash
DistroRelease: Ubuntu 15.04
Package: ubuntu-system-settings 0.3+15.04.20150317-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
Uname: Linux 3.19.0-9-generic x86_64
ApportVersion: 2.16.2-0ubuntu4
Architecture: amd64
CurrentDesktop: GNOME
Date: Sun Mar 22 19:27:54 2015
ExecutablePath: /usr/share/session-migration/scripts/ubuntu-system-settings-sound-gsettings-to-accountsservice.py
InstallationDate: Installed on 2013-11-28 (479 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
InterpreterPath: /usr/bin/python3.4
ProcCmdline: /usr/bin/python3 /usr/share/session-migration/scripts/ubuntu-system-settings-sound-gsettings-to-accountsservice.py
PythonArgs: ['/usr/share/session-migration/scripts/ubuntu-system-settings-sound-gsettings-to-accountsservice.py']
SourcePackage: ubuntu-system-settings
Title: ubuntu-system-settings-sound-gsettings-to-accountsservice.py crashed with dbus.exceptions.DBusException in __new__(): org.freedesktop.DBus.Error.FileNotFound: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.