diff --git a/core/java/android/view/WindowManagerPolicy.java b/core/java/android/view/WindowManagerPolicy.java
index 9e188a6ae7f01..d577b2b6952cb 100644
--- a/core/java/android/view/WindowManagerPolicy.java
+++ b/core/java/android/view/WindowManagerPolicy.java
@@ -430,6 +430,7 @@ public FakeWindow addFakeWindow(Looper looper,
         public void shutdown(boolean confirm);
         public void rebootSafeMode(boolean confirm);
         public void reboot();
+        public boolean isShutdownSequenceStarted();
 
         /**
          * Return the window manager lock needed to correctly call "Lw" methods.
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index 76cfb13670ac6..33d0f4d57b615 100644
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -1023,18 +1023,26 @@ else if (FactoryTest.isLongPressOnPowerOffEnabled()) {
                 break;
             case LONG_PRESS_POWER_GLOBAL_ACTIONS:
                 mPowerKeyHandled = true;
-                if (!performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false)) {
-                    performAuditoryFeedbackForAccessibilityIfNeed();
+                if (mWindowManagerFuncs.isShutdownSequenceStarted()) {
+                    sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
+                } else {
+                    if (!performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false)) {
+                        performAuditoryFeedbackForAccessibilityIfNeed();
+                    }
+                    sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
+                    showGlobalActionsDialog();
                 }
-                sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
-                showGlobalActionsDialog();
                 break;
             case LONG_PRESS_POWER_SHUT_OFF:
             case LONG_PRESS_POWER_SHUT_OFF_NO_CONFIRM:
                 mPowerKeyHandled = true;
-                performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
-                sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
-                mWindowManagerFuncs.shutdown(resolvedBehavior == LONG_PRESS_POWER_SHUT_OFF);
+                if (mWindowManagerFuncs.isShutdownSequenceStarted()) {
+                    sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
+                } else {
+                    performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
+                    sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
+                    mWindowManagerFuncs.shutdown(resolvedBehavior == LONG_PRESS_POWER_SHUT_OFF);
+                }
                 break;
             }
         }
diff --git a/services/java/com/android/server/power/ShutdownThread.java b/services/java/com/android/server/power/ShutdownThread.java
index dc1a163875f5d..e0d7ebee685f4 100644
--- a/services/java/com/android/server/power/ShutdownThread.java
+++ b/services/java/com/android/server/power/ShutdownThread.java
@@ -15,7 +15,6 @@
  * limitations under the License.
  */
 
- 
 package com.android.server.power;
 
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -65,11 +64,11 @@ public final class ShutdownThread extends Thread {
 
     // length of vibration before shutting down
     private static final int SHUTDOWN_VIBRATE_MS = 500;
-    
+
     // state tracking
     private static Object sIsStartedGuard = new Object();
     private static boolean sIsStarted = false;
-    
+
     private static boolean mReboot;
     private static boolean mRebootSafeMode;
     private static String mRebootReason;
@@ -94,10 +93,16 @@ public final class ShutdownThread extends Thread {
     private Handler mHandler;
 
     private static AlertDialog sConfirmDialog;
-    
+
     private ShutdownThread() {
     }
- 
+
+    public static boolean isStarted() {
+        synchronized (sIsStartedGuard) {
+            return sIsStarted;
+        }
+    }
+
     /**
      * Request a clean shutdown, waiting for subsystems to clean up their
      * state etc.  Must be called from a Looper thread in which its UI
@@ -358,14 +363,13 @@ public void run() {
         // Shutdown radios.
         shutdownRadios(MAX_RADIO_WAIT_TIME);
         Log.i(TAG, "Sending shutdown broadcast...");
-        
+
         // First send the high-level shut down broadcast.
         Intent intent = new Intent(Intent.ACTION_SHUTDOWN);
         intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
         mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
-
         Log.i(TAG, "Shutting down activity manager...");
-        
+
         final IActivityManager am =
             ActivityManagerNative.asInterface(ServiceManager.checkService("activity"));
         if (am != null) {
diff --git a/services/java/com/android/server/wm/WindowManagerService.java b/services/java/com/android/server/wm/WindowManagerService.java
index dcbcb22dd782f..049a952123a29 100644
--- a/services/java/com/android/server/wm/WindowManagerService.java
+++ b/services/java/com/android/server/wm/WindowManagerService.java
@@ -5346,6 +5346,12 @@ public void rebootSafeMode(boolean confirm) {
         ShutdownThread.rebootSafeMode(getUiContext(), confirm);
     }
 
+    // Called by window manager policy.  Not exposed externally.
+    @Override
+    public boolean isShutdownSequenceStarted() {
+        return ShutdownThread.isStarted();
+    }
+
     @Override
     public void setInputFilter(IInputFilter filter) {
         if (!checkCallingPermission(android.Manifest.permission.FILTER_EVENTS, "setInputFilter()")) {