diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 4d2747a2718a3..2ed181771cb7c 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -711,6 +711,9 @@
          mode. -->
     <integer name="config_unfoldTransitionHalfFoldedTimeout">1000</integer>
 
+    <!-- Timeout for receiving the keyguard drawn event from System UI.  -->
+    <integer name="config_keyguardDrawnTimeout">1000</integer>
+
     <!-- Indicates that the device supports having more than one internal display on at the same
          time. Only applicable to devices with more than one internal display. If this option is
          set to false, DisplayManager will make additional effort to ensure no more than 1 internal
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index a15833d368705..c10612e16acf5 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -1939,6 +1939,7 @@
   <java-symbol type="bool" name="config_allowTheaterModeWakeFromDock" />
   <java-symbol type="bool" name="config_allowTheaterModeWakeFromWindowLayout" />
   <java-symbol type="bool" name="config_keepDreamingWhenUndocking" />
+  <java-symbol type="integer" name="config_keyguardDrawnTimeout" />
   <java-symbol type="bool" name="config_goToSleepOnButtonPressTheaterMode" />
   <java-symbol type="bool" name="config_supportLongPressPowerWhenNonInteractive" />
   <java-symbol type="bool" name="config_wimaxEnabled" />
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index 4ec8afde62e81..ea53ea51b4248 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -647,6 +647,9 @@ public class PhoneWindowManager implements WindowManagerPolicy {
 
     private boolean mLockNowPending = false;
 
+    // Timeout for showing the keyguard after the screen is on, in case no "ready" is received.
+    private int mKeyguardDrawnTimeout = 1000;
+
     private static final int MSG_DISPATCH_MEDIA_KEY_WITH_WAKE_LOCK = 3;
     private static final int MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK = 4;
     private static final int MSG_KEYGUARD_DRAWN_COMPLETE = 5;
@@ -2236,6 +2239,8 @@ public class PhoneWindowManager implements WindowManagerPolicy {
             }
         });
 
+        mKeyguardDrawnTimeout = mContext.getResources().getInteger(
+                com.android.internal.R.integer.config_keyguardDrawnTimeout);
         mKeyguardDelegate = new KeyguardServiceDelegate(mContext,
                 new StateCallback() {
                     @Override
@@ -4981,7 +4986,7 @@ public class PhoneWindowManager implements WindowManagerPolicy {
         final boolean bootCompleted =
                 LocalServices.getService(SystemServiceManager.class).isBootCompleted();
         // Set longer timeout if it has not booted yet to prevent showing empty window.
-        return bootCompleted ? 1000 : 5000;
+        return bootCompleted ? mKeyguardDrawnTimeout : 5000;
     }
 
     // Called on the DisplayManager's DisplayPowerController thread.