diff --git a/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.java
index 54983c8..fbe6f94 100644
--- a/services/core/java/com/android/server/wm/DisplayContent.java
+++ b/services/core/java/com/android/server/wm/DisplayContent.java
@@ -210,6 +210,7 @@
     final DisplayMetrics mRealDisplayMetrics = new DisplayMetrics();
     /** @see #computeCompatSmallestWidth(boolean, int, int, int, int) */
     private final DisplayMetrics mTmpDisplayMetrics = new DisplayMetrics();
+
     /**
      * Compat metrics computed based on {@link #mDisplayMetrics}.
      * @see #updateDisplayAndOrientation(int)
@@ -226,6 +227,7 @@
      * @see #updateRotationUnchecked(boolean)
      */
     private int mRotation = 0;
+
     /**
      * Last applied orientation of the display.
      * Constants as per {@link android.content.pm.ActivityInfo.ScreenOrientation}.
@@ -233,6 +235,7 @@
      * @see WindowManagerService#updateOrientationFromAppTokensLocked(boolean, int)
      */
     private int mLastOrientation = SCREEN_ORIENTATION_UNSPECIFIED;
+
     /**
      * Flag indicating that the application is receiving an orientation that has different metrics
      * than it expected. E.g. Portrait instead of Landscape.
@@ -240,6 +243,7 @@
      * @see #updateRotationUnchecked(boolean)
      */
     private boolean mAltOrientation = false;
+
     /**
      * Orientation forced by some window. If there is no visible window that specifies orientation
      * it is set to {@link android.content.pm.ActivityInfo#SCREEN_ORIENTATION_UNSPECIFIED}.
@@ -247,6 +251,7 @@
      * @see NonAppWindowContainers#getOrientation()
      */
     private int mLastWindowForcedOrientation = SCREEN_ORIENTATION_UNSPECIFIED;
+
     /**
      * Last orientation forced by the keyguard. It is applied when keyguard is shown and is not
      * occluded.
@@ -255,6 +260,11 @@
      */
     private int mLastKeyguardForcedOrientation = SCREEN_ORIENTATION_UNSPECIFIED;
 
+    /**
+     * Keep track of wallpaper visibility to notify changes.
+     */
+    private boolean mLastWallpaperVisible = false;
+
     private Rect mBaseDisplayRect = new Rect();
     private Rect mContentRect = new Rect();
 
@@ -2765,6 +2775,12 @@
 
         stopDimmingIfNeeded();
 
+        final boolean wallpaperVisible = mWallpaperController.isWallpaperVisible();
+        if (wallpaperVisible != mLastWallpaperVisible) {
+            mLastWallpaperVisible = wallpaperVisible;
+            mService.mWallpaperVisibilityListeners.notifyWallpaperVisibilityChanged(this);
+        }
+
         while (!mTmpUpdateAllDrawn.isEmpty()) {
             final AppWindowToken atoken = mTmpUpdateAllDrawn.removeLast();
             // See if any windows have been drawn, so they (and others associated with them)