diff --git a/data/quick-settings.metainfo.xml b/data/quick-settings.metainfo.xml
index e1a40e9..a481cc0 100644
--- a/data/quick-settings.metainfo.xml
+++ b/data/quick-settings.metainfo.xml
@@ -40,6 +40,7 @@
       </description>
       <issues>
         <issue url="https://github.com/elementary/quick-settings/issues/45">End Session Dialog should pull visual focus</issue>
+        <issue url="https://github.com/elementary/quick-settings/issues/135">Ctrl+Alt+Del not available before opening Quick Settings for the first time</issue>
       </issues>
     </release>
 
diff --git a/src/DBus/EndSessionDialogServer.vala b/src/DBus/EndSessionDialogServer.vala
index 34a6dc8..899c715 100644
--- a/src/DBus/EndSessionDialogServer.vala
+++ b/src/DBus/EndSessionDialogServer.vala
@@ -30,7 +30,7 @@ public class QuickSettings.EndSessionDialogServer : Object {
     }
 
     [DBus (visible = false)]
-    public signal void show_dialog (uint type, uint32 triggering_event_timestamp);
+    public signal void show_dialog (uint type);
 
     public signal void confirmed_logout ();
     public signal void confirmed_reboot ();
@@ -47,6 +47,6 @@ public class QuickSettings.EndSessionDialogServer : Object {
             throw new DBusError.NOT_SUPPORTED ("Hibernate, suspend and hybrid sleep are not supported actions yet");
         }
 
-        show_dialog (type, timestamp);
+        show_dialog (type);
     }
 }
diff --git a/src/Indicator.vala b/src/Indicator.vala
index 04642b1..39c175c 100644
--- a/src/Indicator.vala
+++ b/src/Indicator.vala
@@ -6,6 +6,7 @@
 public class QuickSettings.Indicator : Wingpanel.Indicator {
     public Wingpanel.IndicatorManager.ServerType server_type { get; construct; }
 
+    private EndSessionDialog? current_dialog;
     private PopoverWidget? popover_widget;
 
     public Indicator (Wingpanel.IndicatorManager.ServerType server_type) {
@@ -23,6 +24,55 @@ public class QuickSettings.Indicator : Wingpanel.Indicator {
         // Prevent a race that skips automatic resource loading
         // https://github.com/elementary/wingpanel-indicator-bluetooth/issues/203
         Gtk.IconTheme.get_default ().add_resource_path ("/org/elementary/wingpanel/icons");
+
+        EndSessionDialogServer.init ();
+        EndSessionDialogServer.get_default ().show_dialog.connect (
+            (type) => show_dialog ((EndSessionDialogType) type)
+        );
+    }
+
+    private void show_dialog (EndSessionDialogType type) {
+        ((Gtk.Popover?) popover_widget?.get_ancestor (typeof (Gtk.Popover)))?.popdown ();
+
+        if (current_dialog != null) {
+            if (current_dialog.dialog_type != type) {
+                current_dialog.destroy ();
+            } else {
+                return;
+            }
+        }
+
+        unowned var server = EndSessionDialogServer.get_default ();
+
+        current_dialog = new EndSessionDialog (type);
+        current_dialog.destroy.connect (() => {
+            server.closed ();
+            current_dialog = null;
+        });
+
+        current_dialog.cancelled.connect (() => server.canceled ());
+        current_dialog.logout.connect (() => server.confirmed_logout ());
+        current_dialog.shutdown.connect (() => {
+            try {
+                // See https://www.freedesktop.org/software/systemd/man/latest/org.freedesktop.login1.html for flags values
+                // #define SD_LOGIND_ROOT_CHECK_INHIBITORS (UINT64_C(1) << 0) == 1
+                Login1Manager.get_default ().proxy.power_off_with_flags (1);
+            } catch (Error e) {
+                warning ("Unable to shutdown: %s", e.message);
+            }
+        });
+
+        current_dialog.reboot.connect (() => {
+            try {
+                // See https://www.freedesktop.org/software/systemd/man/latest/org.freedesktop.login1.html for flags values
+                // #define SD_LOGIND_KEXEC_REBOOT (UINT64_C(1) << 1) == 2
+                Login1Manager.get_default ().proxy.reboot_with_flags (2);
+            } catch (Error e) {
+                warning ("Unable to reboot: %s", e.message);
+            }
+        });
+
+        current_dialog.present ();
     }
 
     public override Gtk.Widget get_display_widget () {
diff --git a/src/Widgets/SessionBox.vala b/src/Widgets/SessionBox.vala
index a510547..1a404fc 100644
--- a/src/Widgets/SessionBox.vala
+++ b/src/Widgets/SessionBox.vala
@@ -6,7 +6,6 @@
 public class QuickSettings.SessionBox : Gtk.Box {
     public Wingpanel.IndicatorManager.ServerType server_type { get; construct; }
 
-    private EndSessionDialog? current_dialog = null;
     private Gtk.Popover? popover;
 
     public SessionBox (Wingpanel.IndicatorManager.ServerType server_type) {
@@ -65,7 +64,7 @@ public class QuickSettings.SessionBox : Gtk.Box {
 
         shutdown_button.clicked.connect (() => {
             popover.popdown ();
-            show_dialog (EndSessionDialogType.RESTART);
+            EndSessionDialogServer.get_default ().show_dialog (EndSessionDialogType.RESTART);
         });
 
         suspend_button.clicked.connect (() => {
@@ -90,11 +89,6 @@ public class QuickSettings.SessionBox : Gtk.Box {
             );
         });
 
-        EndSessionDialogServer.init ();
-        EndSessionDialogServer.get_default ().show_dialog.connect (
-            (type, timestamp) => show_dialog ((EndSessionDialogType) type)
-        );
-
         settings_button.clicked.connect (() => {
             popover.popdown ();
 
@@ -114,56 +108,4 @@ public class QuickSettings.SessionBox : Gtk.Box {
             return null;
         }
     }
-
-    private void show_dialog (EndSessionDialogType type) {
-        popover.popdown ();
-
-        if (current_dialog != null) {
-            if (current_dialog.dialog_type != type) {
-                current_dialog.destroy ();
-            } else {
-                return;
-            }
-        }
-
-        unowned var server = EndSessionDialogServer.get_default ();
-
-        current_dialog = new EndSessionDialog (type) {
-            transient_for = (Gtk.Window) get_toplevel ()
-        };
-        current_dialog.destroy.connect (() => {
-            server.closed ();
-            current_dialog = null;
-        });
-
-        current_dialog.cancelled.connect (() => {
-            server.canceled ();
-        });
-
-        current_dialog.logout.connect (() => {
-            server.confirmed_logout ();
-        });
-
-        current_dialog.shutdown.connect (() => {
-            try {
-                // See https://www.freedesktop.org/software/systemd/man/latest/org.freedesktop.login1.html for flags values
-                // #define SD_LOGIND_ROOT_CHECK_INHIBITORS (UINT64_C(1) << 0) == 1
-                Login1Manager.get_default ().proxy.power_off_with_flags (1);
-            } catch (Error e) {
-                warning ("Unable to shutdown: %s", e.message);
-            }
-        });
-
-        current_dialog.reboot.connect (() => {
-            try {
-                // See https://www.freedesktop.org/software/systemd/man/latest/org.freedesktop.login1.html for flags values
-                // #define SD_LOGIND_KEXEC_REBOOT (UINT64_C(1) << 1) == 2
-                Login1Manager.get_default ().proxy.reboot_with_flags (2);
-            } catch (Error e) {
-                warning ("Unable to reboot: %s", e.message);
-            }
-        });
-
-        current_dialog.present ();
-    }
 }