FM / system.d

/etc/dbus-1/system.d

Name	Size	Mode	Actions
com.ubuntu.SoftwareProperties.conf	662	0644	edit dl rm
org.freedesktop.ModemManager1.conf	14879	0644	edit dl rm
org.freedesktop.PackageKit.conf	1331	0644	edit dl rm
org.freedesktop.thermald.conf	930	0644	edit dl rm

Edit: /etc/dbus-1/system.d/org.freedesktop.PackageKit.conf (1331B)

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>

<policy user="root">
    <allow own="org.freedesktop.PackageKit"/>
  </policy>

<policy context="default">
    <allow send_destination="org.freedesktop.PackageKit"
           send_interface="org.freedesktop.PackageKit"/>
    <allow send_destination="org.freedesktop.PackageKit"
           send_interface="org.freedesktop.PackageKit.Transaction"/>
    <allow send_destination="org.freedesktop.PackageKit"
           send_interface="org.freedesktop.PackageKit.Offline"/>
    <allow send_destination="org.freedesktop.PackageKit"
           send_interface="org.freedesktop.DBus.Properties"/>
    <allow send_destination="org.freedesktop.PackageKit"
           send_interface="org.freedesktop.DBus.Introspectable"/>
    <allow send_destination="org.freedesktop.PackageKit"
           send_interface="org.freedesktop.DBus.Peer"/>
  </policy>

</busconfig>