Indeed, accountsservice sends a reply even when the client talking to it doesn't want one. The dbus daemon doesn't remember messages that have NO_REPLY_EXPECTED set, so the replies from accountsservice look like unsolicited messages to it and it denies them.
Gnome bug #755421 argues that this should be fixed in gdbus, and I agree. gdbus automatically sets NO_REPLY_EXPECTED when no callback is given, so it makes sense that it also handles the server side by discarding replies for such messages. I've attached a patch upstream. ** Bug watch added: GNOME Bug Tracker #755421 https://bugzilla.gnome.org/show_bug.cgi?id=755421 ** Also affects: glib via https://bugzilla.gnome.org/show_bug.cgi?id=755421 Importance: Unknown Status: Unknown ** Changed in: accountsservice (Ubuntu) Status: Confirmed => Invalid ** Also affects: glib2.0 (Ubuntu) Importance: Undecided Status: New ** Changed in: glib2.0 (Ubuntu) Status: New => Triaged ** Changed in: glib2.0 (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of DX Packages, which is subscribed to accountsservice in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1488344 Title: dbus rejected send messages Status in GLib: Unknown Status in accountsservice package in Ubuntu: Invalid Status in glib2.0 package in Ubuntu: Triaged Bug description: Seeing these log entries in the syslog Aug 24 18:26:36 M1 dbus[783]: [system] Rejected send message, 9 matched rules; type="method_return", sender=":1.5" (uid=0 pid=733 comm="/usr/lib/accountsservice/accounts-daemon ") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.59" (uid=1000 pid=4326 comm="/usr/lib/x86_64-linux-gnu/indicator-messages/indic") Hope the attached info helps locating the issue? ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: dbus 1.8.12-1ubuntu5 ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4 Uname: Linux 3.19.0-26-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.17.2-0ubuntu1.3 Architecture: amd64 Date: Tue Aug 25 18:30:51 2015 InstallationDate: Installed on 2014-10-31 (298 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) SourcePackage: dbus UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/glib/+bug/1488344/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp
