## Submitted by Alex Kaplin Assigned to **Xfce Bug Triage** **[Link to original bug (#15907)](https://bugzilla.xfce.org/show_bug.cgi?id=15907)** ## Description Hello, when I try to log out from desktop (Start->Log Out) I'm getting a message box error with "Session Manager expects system shutdown. Please wait" text. I've tried to investigate source code of xfce4-session-logout and found that g_dbus_proxy_new_for_bus_sync returns NULL value instead of GDBusProxy: xfce4-session/xfce4-session-logout/main.c: ``` ..... GDBusProxy *proxy = NULL; ..... proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_NONE, NULL, "org.xfce.SessionManager", "/org/xfce/SessionManager", "org.xfce.Session.Manager", NULL, &err); if (proxy == NULL) { xfce_session_logout_notify_error (_("Received error while trying to log out"), err, have_display); /*seems this i'm getting*/ g_error_free (err); return EXIT_FAILURE; } ``` Is any way to manually debug this situation? If so how I can do it? And what datas should I provide for you to investigate this issue? My XFCE version is: ``` xfce4-session 4.12.1 (Xfce 4.12) Copyright (c) 2004-2012 The Xfce development team. All rights reserved. Written by Benedikt Meurer <benny@xfce.org> and Brian Tarricone <kelnos@xfce.org>. Please report bugs to <http://bugs.xfce.org/>. ``` WBR, Alex Version: 4.12.0