Index: accountsservice-0.6.13/src/daemon.c
===================================================================
--- accountsservice-0.6.13.orig/src/daemon.c	2011-08-10 11:12:56.876468024 -0400
+++ accountsservice-0.6.13/src/daemon.c	2011-08-11 12:19:21.070627049 -0400
@@ -1192,10 +1192,10 @@
 }
 
 gboolean
-load_autologin (Daemon      *daemon,
-                gchar      **name,
-                gboolean    *enabled,
-                GError     **error)
+load_autologin_gdm (Daemon      *daemon,
+                    gchar      **name,
+                    gboolean    *enabled,
+                    GError     **error)
 {
         GKeyFile *keyfile;
         const gchar *filename;
@@ -1241,16 +1241,72 @@
         return TRUE;
 }
 
-static gboolean
-save_autologin (Daemon      *daemon,
-                const gchar *name,
-                gboolean     enabled,
+gboolean
+load_autologin_lightdm (Daemon      *daemon,
+                        gchar      **name,
+                        gboolean    *enabled,
+                        GError     **error)
+{
+        GKeyFile *keyfile;
+        const gchar *filename;
+
+        filename = "/etc/lightdm/lightdm.conf";
+
+        keyfile = g_key_file_new ();
+        if (!g_key_file_load_from_file (keyfile,
+                                        filename,
+                                        G_KEY_FILE_KEEP_COMMENTS,
+                                        error)) {
+                g_key_file_free (keyfile);
+                return FALSE;
+        }
+
+        *name = g_key_file_get_string (keyfile, "daemon", "autologin-user", error);
+        *enabled = (error == NULL && (*name) && (*name)[0] != 0);
+
+        g_key_file_free (keyfile);
+
+        return (error == NULL);
+}
+
+gboolean
+load_autologin (Daemon      *daemon,
+                gchar      **name,
+                gboolean    *enabled,
                 GError     **error)
 {
+        DBusGProxy *proxy;
+
+        /* First, determine whether we should load GDM or LightDM values by
+           checking if GDM is running. */
+        proxy = dbus_g_proxy_new_for_name_owner (daemon->priv->bus_connection,
+                                                 "org.gnome.DisplayManager",
+                                                 "/org/gnome/DisplayManager/Manager",
+                                                 "org.gnome.DisplayManager.Manager",
+                                                 NULL);
+
+        if (proxy != NULL) {
+                g_object_unref (proxy);
+                return load_autologin_gdm (daemon, name, enabled, error);
+        } else {
+                return load_autologin_lightdm (daemon, name, enabled, error);
+        }
+}
+
+static gboolean
+save_autologin_gdm (Daemon      *daemon,
+                    const gchar *name,
+                    gboolean     enabled,
+                    GError     **error)
+{
         GKeyFile *keyfile;
         const gchar *filename;
         gchar *data;
         gboolean result;
+        GError *local_error = NULL;
+
+        if (!g_file_test ("/etc/gdm", G_FILE_TEST_EXISTS))
+                return TRUE; /* not an error, just not installed */
 
         filename = "/etc/gdm/custom.conf";
 
@@ -1258,9 +1314,14 @@
         if (!g_key_file_load_from_file (keyfile,
                                         filename,
                                         G_KEY_FILE_KEEP_COMMENTS,
-                                        error)) {
-                g_key_file_free (keyfile);
-                return FALSE;
+                                        &local_error)) {
+                /* It's OK for custom.conf to not exist, we will make it */
+                if (!g_error_matches (local_error, G_FILE_ERROR, G_FILE_ERROR_NOENT)) {
+                        g_propagate_error (error, local_error);
+                        g_key_file_free (keyfile);
+                        return FALSE;
+                }
+                g_error_free (local_error);
         }
 
         g_key_file_set_string (keyfile, "daemon", "AutomaticLoginEnable", enabled ? "True" : "False");
@@ -1275,6 +1336,61 @@
         return result;
 }
 
+static gboolean
+save_autologin_lightdm (Daemon      *daemon,
+                        const gchar *name,
+                        gboolean     enabled,
+                        GError     **error)
+{
+        GKeyFile *keyfile;
+        const gchar *filename;
+        gchar *data;
+        gboolean result;
+        GError *local_error = NULL;
+
+        if (!g_file_test ("/etc/lightdm", G_FILE_TEST_EXISTS))
+                return TRUE; /* not an error, just not installed */
+
+        filename = "/etc/lightdm/lightdm.conf";
+
+        keyfile = g_key_file_new ();
+        if (!g_key_file_load_from_file (keyfile,
+                                        filename,
+                                        G_KEY_FILE_KEEP_COMMENTS,
+                                        &local_error)) {
+                /* It's OK for custom.conf to not exist, we will make it */
+                if (!g_error_matches (local_error, G_FILE_ERROR, G_FILE_ERROR_NOENT)) {
+                        g_propagate_error (error, local_error);
+                        g_key_file_free (keyfile);
+                        return FALSE;
+                }
+                g_error_free (local_error);
+        }
+
+        g_key_file_set_string (keyfile, "SeatDefaults", "autologin-user", enabled ? name : "");
+
+        data = g_key_file_to_data (keyfile, NULL, NULL);
+        result = g_file_set_contents (filename, data, -1, error);
+
+        g_key_file_free (keyfile);
+        g_free (data);
+
+        return result;
+}
+
+static gboolean
+save_autologin (Daemon      *daemon,
+                const gchar *name,
+                gboolean     enabled,
+                GError     **error)
+{
+        if (!save_autologin_gdm (daemon, name, enabled, error))
+                return FALSE;
+        if (!save_autologin_lightdm (daemon, name, enabled, error))
+                return FALSE;
+        return TRUE;
+}
+
 gboolean
 daemon_local_set_automatic_login (Daemon    *daemon,
                                   User      *user,