diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index 247a5c0..375f53b 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -1004,7 +1004,7 @@
             return;
         }
 
-        final boolean interactive = Display.isOnState(mDefaultDisplay.getState());
+        final boolean interactive = mDefaultDisplayPolicy.isAwake();
 
         Slog.d(TAG, "powerPress: eventTime=" + eventTime + " interactive=" + interactive
                 + " count=" + count + " beganFromNonInteractive=" + beganFromNonInteractive
@@ -2201,8 +2201,10 @@
 
         // Match current screen state.
         if (!mPowerManager.isInteractive()) {
-            startedGoingToSleep(PowerManager.GO_TO_SLEEP_REASON_TIMEOUT);
-            finishedGoingToSleep(PowerManager.GO_TO_SLEEP_REASON_TIMEOUT);
+            startedGoingToSleep(Display.DEFAULT_DISPLAY_GROUP,
+                    PowerManager.GO_TO_SLEEP_REASON_TIMEOUT);
+            finishedGoingToSleep(Display.DEFAULT_DISPLAY_GROUP,
+                    PowerManager.GO_TO_SLEEP_REASON_TIMEOUT);
         }
 
         mWindowManagerInternal.registerAppTransitionListener(new AppTransitionListener() {
@@ -4095,7 +4097,7 @@
 
         // This could prevent some wrong state in multi-displays environment,
         // the default display may turned off but interactive is true.
-        final boolean isDefaultDisplayOn = Display.isOnState(mDefaultDisplay.getState());
+        final boolean isDefaultDisplayOn = mDefaultDisplayPolicy.isAwake();
         final boolean interactiveAndOn = interactive && isDefaultDisplayOn;
         if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
             handleKeyGesture(event, interactiveAndOn);
@@ -4795,17 +4797,40 @@
         }
     };
 
+    @Override
+    public void startedWakingUpGlobal(@WakeReason int reason) {
+
+    }
+
+    @Override
+    public void finishedWakingUpGlobal(@WakeReason int reason) {
+
+    }
+
+    @Override
+    public void startedGoingToSleepGlobal(@PowerManager.GoToSleepReason int reason) {
+        mDeviceGoingToSleep = true;
+    }
+
+    @Override
+    public void finishedGoingToSleepGlobal(@PowerManager.GoToSleepReason int reason) {
+        mDeviceGoingToSleep = false;
+    }
+
     // Called on the PowerManager's Notifier thread.
     @Override
-    public void startedGoingToSleep(@PowerManager.GoToSleepReason int pmSleepReason) {
+    public void startedGoingToSleep(int displayGroupId,
+            @PowerManager.GoToSleepReason int pmSleepReason) {
         if (DEBUG_WAKEUP) {
-            Slog.i(TAG, "Started going to sleep... (why="
+            Slog.i(TAG, "Started going to sleep... (groupId=" + displayGroupId + " why="
                     + WindowManagerPolicyConstants.offReasonToString(
                             WindowManagerPolicyConstants.translateSleepReasonToOffReason(
                                     pmSleepReason)) + ")");
         }
+        if (displayGroupId != Display.DEFAULT_DISPLAY_GROUP) {
+            return;
+        }
 
-        mDeviceGoingToSleep = true;
         mRequestedOrSleepingDefaultDisplay = true;
 
         if (mKeyguardDelegate != null) {
@@ -4815,17 +4840,20 @@
 
     // Called on the PowerManager's Notifier thread.
     @Override
-    public void finishedGoingToSleep(@PowerManager.GoToSleepReason int pmSleepReason) {
+    public void finishedGoingToSleep(int displayGroupId,
+            @PowerManager.GoToSleepReason int pmSleepReason) {
+        if (displayGroupId != Display.DEFAULT_DISPLAY_GROUP) {
+            return;
+        }
         EventLogTags.writeScreenToggled(0);
         if (DEBUG_WAKEUP) {
-            Slog.i(TAG, "Finished going to sleep... (why="
+            Slog.i(TAG, "Finished going to sleep... (groupId=" + displayGroupId + " why="
                     + WindowManagerPolicyConstants.offReasonToString(
                             WindowManagerPolicyConstants.translateSleepReasonToOffReason(
                                     pmSleepReason)) + ")");
         }
         MetricsLogger.histogram(mContext, "screen_timeout", mLockScreenTimeout / 1000);
 
-        mDeviceGoingToSleep = false;
         mRequestedOrSleepingDefaultDisplay = false;
         mDefaultDisplayPolicy.setAwake(false);
 
@@ -4850,26 +4878,18 @@
 
     // Called on the PowerManager's Notifier thread.
     @Override
-    public void onPowerGroupWakefulnessChanged(int groupId, int wakefulness,
-            @PowerManager.GoToSleepReason int pmSleepReason, int globalWakefulness) {
-        if (wakefulness != globalWakefulness
-                && wakefulness != PowerManagerInternal.WAKEFULNESS_AWAKE
-                && groupId == Display.DEFAULT_DISPLAY_GROUP
-                && mKeyguardDelegate != null) {
-            mKeyguardDelegate.doKeyguardTimeout(null);
-        }
-    }
-
-    // Called on the PowerManager's Notifier thread.
-    @Override
-    public void startedWakingUp(@PowerManager.WakeReason int pmWakeReason) {
-        EventLogTags.writeScreenToggled(1);
+    public void startedWakingUp(int displayGroupId, @WakeReason int pmWakeReason) {
         if (DEBUG_WAKEUP) {
-            Slog.i(TAG, "Started waking up... (why="
+            Slog.i(TAG, "Started waking up... (groupId=" + displayGroupId + " why="
                     + WindowManagerPolicyConstants.onReasonToString(
-                            WindowManagerPolicyConstants.translateWakeReasonToOnReason(
-                                    pmWakeReason)) + ")");
+                    WindowManagerPolicyConstants.translateWakeReasonToOnReason(
+                            pmWakeReason)) + ")");
         }
+        if (displayGroupId != Display.DEFAULT_DISPLAY_GROUP) {
+            return;
+        }
+        EventLogTags.writeScreenToggled(1);
+
 
         mDefaultDisplayPolicy.setAwake(true);
 
@@ -4892,13 +4912,16 @@
 
     // Called on the PowerManager's Notifier thread.
     @Override
-    public void finishedWakingUp(@PowerManager.WakeReason int pmWakeReason) {
+    public void finishedWakingUp(int displayGroupId, @WakeReason int pmWakeReason) {
         if (DEBUG_WAKEUP) {
-            Slog.i(TAG, "Finished waking up... (why="
+            Slog.i(TAG, "Finished waking up... (groupId=" + displayGroupId + " why="
                     + WindowManagerPolicyConstants.onReasonToString(
                             WindowManagerPolicyConstants.translateWakeReasonToOnReason(
                                     pmWakeReason)) + ")");
         }
+        if (displayGroupId != Display.DEFAULT_DISPLAY_GROUP) {
+            return;
+        }
 
         if (mKeyguardDelegate != null) {
             mKeyguardDelegate.onFinishedWakingUp();
@@ -5378,8 +5401,8 @@
             }
         }
         mSideFpsEventHandler.onFingerprintSensorReady();
-        startedWakingUp(PowerManager.WAKE_REASON_UNKNOWN);
-        finishedWakingUp(PowerManager.WAKE_REASON_UNKNOWN);
+        startedWakingUp(Display.DEFAULT_DISPLAY_GROUP, PowerManager.WAKE_REASON_UNKNOWN);
+        finishedWakingUp(Display.DEFAULT_DISPLAY_GROUP, PowerManager.WAKE_REASON_UNKNOWN);
 
         int defaultDisplayState = mDisplayManager.getDisplay(DEFAULT_DISPLAY).getState();
         boolean defaultDisplayOn = defaultDisplayState == Display.STATE_ON;
diff --git a/services/core/java/com/android/server/policy/WindowManagerPolicy.java b/services/core/java/com/android/server/policy/WindowManagerPolicy.java
index 5d558e9..909d019 100644
--- a/services/core/java/com/android/server/policy/WindowManagerPolicy.java
+++ b/services/core/java/com/android/server/policy/WindowManagerPolicy.java
@@ -67,10 +67,12 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.companion.virtual.VirtualDevice;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.graphics.Rect;
+import android.hardware.display.VirtualDisplay;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.PowerManager;
@@ -762,50 +764,84 @@
     void setAllowLockscreenWhenOn(int displayId, boolean allow);
 
     /**
+     * Called when the global wakefulness is becoming awake.
+     *
+     * @param reason One of PowerManager.WAKE_REASON_*, detailing the reason for the change.
+     */
+    void startedWakingUpGlobal(@PowerManager.WakeReason int reason);
+
+    /**
+     * Called when the global wakefulness has finished becoming awake.
+     *
+     * @param reason One of PowerManager.WAKE_REASON_*, detailing the reason for the change.
+     */
+    void finishedWakingUpGlobal(@PowerManager.WakeReason int reason);
+
+    /**
+     * Called when the global wakefulness has started going to sleep.
+     *
+     * @param reason One of PowerManager.WAKE_REASON_*, detailing the reason for the change.
+     */
+    void startedGoingToSleepGlobal(@PowerManager.GoToSleepReason int reason);
+
+    /**
+     * Called when the global wakefulness has finished going to sleep.
+     *
+     * @param reason One of PowerManager.WAKE_REASON_*, detailing the reason for the change.
+     */
+    void finishedGoingToSleepGlobal(@PowerManager.GoToSleepReason int reason);
+
+    /**
      * Called when the device has started waking up.
      *
-     * @param pmWakeReason One of PowerManager.WAKE_REASON_*, detailing the specific reason we're
-     * waking up, such as WAKE_REASON_POWER_BUTTON or WAKE_REASON_GESTURE.
+     * @param displayGroupId The id of the display group that has started waking up. This will often
+     *                       be {@link Display#DEFAULT_DISPLAY_GROUP}, but it is possible for other
+     *                       display groups to exist, for example when there is a
+     *                       {@link VirtualDevice} with one or more {@link VirtualDisplay}s.
+     * @param pmWakeReason One of PowerManager.WAKE_REASON_*, detailing the specific reason this
+     *                     display group is waking up, such as WAKE_REASON_POWER_BUTTON or
+     *                     WAKE_REASON_GESTURE.
      */
-    void startedWakingUp(@PowerManager.WakeReason int pmWakeReason);
+    void startedWakingUp(int displayGroupId, @PowerManager.WakeReason int pmWakeReason);
 
     /**
      * Called when the device has finished waking up.
      *
-     * @param pmWakeReason One of PowerManager.WAKE_REASON_*, detailing the specific reason we're
-     * waking up, such as WAKE_REASON_POWER_BUTTON or WAKE_REASON_GESTURE.
+     * @param displayGroupId The id of the display group that has finished waking. This will often
+     *                       be {@link Display#DEFAULT_DISPLAY_GROUP}, but it is possible for other
+     *                       display groups to exist, for example when there is a
+     *                       {@link VirtualDevice} with one or more {@link VirtualDisplay}s.
+     * @param pmWakeReason One of PowerManager.WAKE_REASON_*, detailing the specific reason this
+     *                     display group is waking up, such as WAKE_REASON_POWER_BUTTON or
+     *                     WAKE_REASON_GESTURE.
      */
-    void finishedWakingUp(@PowerManager.WakeReason int pmWakeReason);
+    void finishedWakingUp(int displayGroupId, @PowerManager.WakeReason int pmWakeReason);
 
     /**
      * Called when the device has started going to sleep.
      *
+     * @param displayGroupId The id of the display group that has started going to sleep. This
+     *                       will often be {@link Display#DEFAULT_DISPLAY_GROUP}, but it is
+     *                       possible for other display groups to exist, for example when there is a
+     *                       {@link VirtualDevice} with one or more {@link VirtualDisplay}s.
      * @param pmSleepReason One of PowerManager.GO_TO_SLEEP_REASON_*, detailing the specific reason
-     * we're going to sleep, such as GO_TO_SLEEP_REASON_POWER_BUTTON or GO_TO_SLEEP_REASON_TIMEOUT.
+     *                      this display group is going to sleep, such as
+     *                      GO_TO_SLEEP_REASON_POWER_BUTTON or GO_TO_SLEEP_REASON_TIMEOUT.
      */
-    public void startedGoingToSleep(@PowerManager.GoToSleepReason int pmSleepReason);
+    void startedGoingToSleep(int displayGroupId, @PowerManager.GoToSleepReason int pmSleepReason);
 
     /**
      * Called when the device has finished going to sleep.
      *
+     * @param displayGroupId The id of the display group that has finished going to sleep. This
+     *                       will often be {@link Display#DEFAULT_DISPLAY_GROUP}, but it is
+     *                       possible for other display groups to exist, for example when there is a
+     *                       {@link VirtualDevice} with one or more {@link VirtualDisplay}s.
      * @param pmSleepReason One of PowerManager.GO_TO_SLEEP_REASON_*, detailing the specific reason
-     * we're going to sleep, such as GO_TO_SLEEP_REASON_POWER_BUTTON or GO_TO_SLEEP_REASON_TIMEOUT.
+     *                      we're going to sleep, such as GO_TO_SLEEP_REASON_POWER_BUTTON or
+     *                      GO_TO_SLEEP_REASON_TIMEOUT.
      */
-    public void finishedGoingToSleep(@PowerManager.GoToSleepReason int pmSleepReason);
-
-    /**
-     * Called when a particular PowerGroup has changed wakefulness.
-     *
-     * @param groupId The id of the PowerGroup.
-     * @param wakefulness One of PowerManagerInternal.WAKEFULNESS_* indicating the wake state for
-     * the group
-     * @param pmSleepReason One of PowerManager.GO_TO_SLEEP_REASON_*, detailing the reason this
-     * group is going to sleep.
-     * @param globalWakefulness The global wakefulness, which may or may not match that of this
-     * group. One of PowerManagerInternal.WAKEFULNESS_*
-     */
-    void onPowerGroupWakefulnessChanged(int groupId, int wakefulness,
-            @PowerManager.GoToSleepReason int pmSleepReason, int globalWakefulness);
+    void finishedGoingToSleep(int displayGroupId, @PowerManager.GoToSleepReason int pmSleepReason);
 
     /**
      * Called when the display is about to turn on to show content.
diff --git a/services/core/java/com/android/server/power/Notifier.java b/services/core/java/com/android/server/power/Notifier.java
index d0ed9bf..9bc0ee22 100644
--- a/services/core/java/com/android/server/power/Notifier.java
+++ b/services/core/java/com/android/server/power/Notifier.java
@@ -51,6 +51,7 @@
 import android.telephony.TelephonyManager;
 import android.util.EventLog;
 import android.util.Slog;
+import android.util.SparseArray;
 import android.view.WindowManagerPolicyConstants;
 
 import com.android.internal.annotations.VisibleForTesting;
@@ -87,7 +88,7 @@
  * tell the system when we go to sleep so that it can lock the keyguard if needed.
  * </p>
  */
-@VisibleForTesting
+@VisibleForTesting(visibility = VisibleForTesting.Visibility.PROTECTED)
 public class Notifier {
     private static final String TAG = "PowerManagerNotifier";
 
@@ -150,14 +151,21 @@
     // begins charging wirelessly
     private final boolean mShowWirelessChargingAnimationConfig;
 
-    // The current interactive state.  This is set as soon as an interactive state
+    // Encapsulates interactivity information about a particular display group.
+    private static class Interactivity {
+        public boolean isInteractive = true;
+        public int changeReason;
+        public long changeStartTime; // In SystemClock.uptimeMillis()
+        public boolean isChanging;
+    }
+
+    private final SparseArray<Interactivity> mInteractivityByGroupId = new SparseArray<>();
+
+    // The current global interactive state.  This is set as soon as an interactive state
     // transition begins so as to capture the reason that it happened.  At some point
     // this state will propagate to the pending state then eventually to the
     // broadcasted state over the course of reporting the transition asynchronously.
-    private boolean mInteractive = true;
-    private int mInteractiveChangeReason;
-    private long mInteractiveChangeStartTime; // In SystemClock.uptimeMillis()
-    private boolean mInteractiveChanging;
+    private Interactivity mGlobalInteractivity = new Interactivity();
 
     // The pending interactive state that we will eventually want to broadcast.
     // This is designed so that we can collapse redundant sequences of awake/sleep
@@ -438,7 +446,8 @@
      * which case it will assume that the state did not fully converge before the
      * next transition began and will recover accordingly.
      */
-    public void onWakefulnessChangeStarted(final int wakefulness, int reason, long eventTime) {
+    public void onGlobalWakefulnessChangeStarted(final int wakefulness, int reason,
+            long eventTime) {
         final boolean interactive = PowerManagerInternal.isInteractive(wakefulness);
         if (DEBUG) {
             Slog.d(TAG, "onWakefulnessChangeStarted: wakefulness=" + wakefulness
@@ -456,10 +465,10 @@
 
         // Handle any early interactive state changes.
         // Finish pending incomplete ones from a previous cycle.
-        if (mInteractive != interactive) {
+        if (mGlobalInteractivity.isInteractive != interactive) {
             // Finish up late behaviors if needed.
-            if (mInteractiveChanging) {
-                handleLateInteractiveChange();
+            if (mGlobalInteractivity.isChanging) {
+                handleLateGlobalInteractiveChange();
             }
 
             // Start input as soon as we start waking up or going to sleep.
@@ -475,11 +484,11 @@
                             FrameworkStatsLog.INTERACTIVE_STATE_CHANGED__STATE__OFF);
 
             // Handle early behaviors.
-            mInteractive = interactive;
-            mInteractiveChangeReason = reason;
-            mInteractiveChangeStartTime = eventTime;
-            mInteractiveChanging = true;
-            handleEarlyInteractiveChange();
+            mGlobalInteractivity.isInteractive = interactive;
+            mGlobalInteractivity.isChanging = true;
+            mGlobalInteractivity.changeReason = reason;
+            mGlobalInteractivity.changeStartTime = eventTime;
+            handleEarlyGlobalInteractiveChange();
         }
     }
 
@@ -490,10 +499,34 @@
         if (DEBUG) {
             Slog.d(TAG, "onWakefulnessChangeFinished");
         }
+        for (int i = 0; i < mInteractivityByGroupId.size(); i++) {
+            int groupId = mInteractivityByGroupId.keyAt(i);
+            Interactivity interactivity = mInteractivityByGroupId.valueAt(i);
+            if (interactivity.isChanging) {
+                interactivity.isChanging = false;
+                handleLateInteractiveChange(groupId);
+            }
+        }
+        if (mGlobalInteractivity.isChanging) {
+            mGlobalInteractivity.isChanging = false;
+            handleLateGlobalInteractiveChange();
+        }
+    }
 
-        if (mInteractiveChanging) {
-            mInteractiveChanging = false;
-            handleLateInteractiveChange();
+
+    private void handleEarlyInteractiveChange(int groupId) {
+        synchronized (mLock) {
+            Interactivity interactivity = mInteractivityByGroupId.get(groupId);
+            if (interactivity == null) {
+                Slog.e(TAG, "no Interactivity entry for groupId:" + groupId);
+                return;
+            }
+            final int changeReason = interactivity.changeReason;
+            if (interactivity.isInteractive) {
+                mHandler.post(() -> mPolicy.startedWakingUp(groupId, changeReason));
+            } else {
+                mHandler.post(() -> mPolicy.startedGoingToSleep(groupId, changeReason));
+            }
         }
     }
 
@@ -501,13 +534,13 @@
      * Handle early interactive state changes such as getting applications or the lock
      * screen running and ready for the user to see (such as when turning on the screen).
      */
-    private void handleEarlyInteractiveChange() {
+    private void handleEarlyGlobalInteractiveChange() {
         synchronized (mLock) {
-            if (mInteractive) {
+            if (mGlobalInteractivity.isInteractive) {
                 // Waking up...
                 mHandler.post(() -> {
-                    mPolicy.startedWakingUp(mInteractiveChangeReason);
                     mDisplayManagerInternal.onEarlyInteractivityChange(true /*isInteractive*/);
+                    mPolicy.startedWakingUpGlobal(mGlobalInteractivity.changeReason);
                 });
 
                 // Send interactive broadcast.
@@ -516,37 +549,36 @@
                 updatePendingBroadcastLocked();
             } else {
                 // Going to sleep...
-                // Tell the policy that we started going to sleep.
                 mHandler.post(() -> {
-                    mPolicy.startedGoingToSleep(mInteractiveChangeReason);
                     mDisplayManagerInternal.onEarlyInteractivityChange(false /*isInteractive*/);
+                    mPolicy.startedGoingToSleepGlobal(mGlobalInteractivity.changeReason);
                 });
             }
         }
     }
 
     /**
-     * Handle late interactive state changes once they are finished so that the system can
-     * finish pending transitions (such as turning the screen off) before causing
-     * applications to change state visibly.
+     * Handle late global interactive state changes. Also see
+     * {@link #handleLateInteractiveChange(int)}.
      */
-    private void handleLateInteractiveChange() {
+    private void handleLateGlobalInteractiveChange() {
         synchronized (mLock) {
             final int interactiveChangeLatency =
-                    (int) (SystemClock.uptimeMillis() - mInteractiveChangeStartTime);
-            if (mInteractive) {
+                    (int) (SystemClock.uptimeMillis() - mGlobalInteractivity.changeStartTime);
+            if (mGlobalInteractivity.isInteractive) {
                 // Finished waking up...
                 mHandler.post(() -> {
                     LogMaker log = new LogMaker(MetricsEvent.SCREEN);
                     log.setType(MetricsEvent.TYPE_OPEN);
                     log.setSubtype(WindowManagerPolicyConstants.translateWakeReasonToOnReason(
-                            mInteractiveChangeReason));
+                            mGlobalInteractivity.changeReason));
                     log.setLatency(interactiveChangeLatency);
-                    log.addTaggedData(
-                            MetricsEvent.FIELD_SCREEN_WAKE_REASON, mInteractiveChangeReason);
+                    log.addTaggedData(MetricsEvent.FIELD_SCREEN_WAKE_REASON,
+                            mGlobalInteractivity.changeReason);
                     MetricsLogger.action(log);
                     EventLogTags.writePowerScreenState(1, 0, 0, 0, interactiveChangeLatency);
-                    mPolicy.finishedWakingUp(mInteractiveChangeReason);
+
+                    mPolicy.finishedWakingUpGlobal(mGlobalInteractivity.changeReason);
                 });
             } else {
                 // Finished going to sleep...
@@ -563,18 +595,19 @@
 
                 // Tell the policy we finished going to sleep.
                 final int offReason = WindowManagerPolicyConstants.translateSleepReasonToOffReason(
-                        mInteractiveChangeReason);
+                        mGlobalInteractivity.changeReason);
                 mHandler.post(() -> {
                     LogMaker log = new LogMaker(MetricsEvent.SCREEN);
                     log.setType(MetricsEvent.TYPE_CLOSE);
                     log.setSubtype(offReason);
                     log.setLatency(interactiveChangeLatency);
-                    log.addTaggedData(
-                            MetricsEvent.FIELD_SCREEN_SLEEP_REASON, mInteractiveChangeReason);
+                    log.addTaggedData(MetricsEvent.FIELD_SCREEN_SLEEP_REASON,
+                            mGlobalInteractivity.changeReason);
                     MetricsLogger.action(log);
                     EventLogTags.writePowerScreenState(
                             0, offReason, 0, 0, interactiveChangeLatency);
-                    mPolicy.finishedGoingToSleep(mInteractiveChangeReason);
+
+                    mPolicy.finishedGoingToSleepGlobal(mGlobalInteractivity.changeReason);
                 });
 
                 // Send non-interactive broadcast.
@@ -586,12 +619,62 @@
     }
 
     /**
+     * Handle late interactive state changes once they are finished so that the system can
+     * finish pending transitions (such as turning the screen off) before causing
+     * applications to change state visibly.
+     */
+    private void handleLateInteractiveChange(int groupId) {
+        synchronized (mLock) {
+            Interactivity interactivity = mInteractivityByGroupId.get(groupId);
+            if (interactivity == null) {
+                Slog.e(TAG, "no Interactivity entry for groupId:" + groupId);
+                return;
+            }
+            final int changeReason = interactivity.changeReason;
+            if (interactivity.isInteractive) {
+                mHandler.post(() -> mPolicy.finishedWakingUp(groupId, changeReason));
+            } else {
+                mHandler.post(() -> mPolicy.finishedGoingToSleep(groupId, changeReason));
+            }
+        }
+    }
+
+    /**
      * Called when an individual PowerGroup changes wakefulness.
      */
-    public void onPowerGroupWakefulnessChanged(int groupId, int groupWakefulness, int changeReason,
-            int globalWakefulness) {
-        mHandler.post(() -> mPolicy.onPowerGroupWakefulnessChanged(groupId, groupWakefulness,
-                changeReason, globalWakefulness));
+    public void onGroupWakefulnessChangeStarted(int groupId, int wakefulness, int changeReason,
+            long eventTime) {
+        final boolean isInteractive = PowerManagerInternal.isInteractive(wakefulness);
+
+        boolean isNewGroup = false;
+        Interactivity interactivity = mInteractivityByGroupId.get(groupId);
+        if (interactivity == null) {
+            isNewGroup = true;
+            interactivity = new Interactivity();
+            mInteractivityByGroupId.put(groupId, interactivity);
+        }
+        if (isNewGroup || interactivity.isInteractive != isInteractive) {
+            // Finish up late behaviors if needed.
+            if (interactivity.isChanging) {
+                handleLateInteractiveChange(groupId);
+            }
+
+            // Handle early behaviors.
+            interactivity.isInteractive = isInteractive;
+            interactivity.changeReason = changeReason;
+            interactivity.changeStartTime = eventTime;
+            interactivity.isChanging = true;
+            handleEarlyInteractiveChange(groupId);
+        }
+    }
+
+    /**
+     * Called when a PowerGroup has been removed.
+     *
+     * @param groupId which group was removed
+     */
+    public void onGroupRemoved(int groupId) {
+        mInteractivityByGroupId.remove(groupId);
     }
 
     /**
diff --git a/services/core/java/com/android/server/power/PowerManagerService.java b/services/core/java/com/android/server/power/PowerManagerService.java
index e392c24..9ff98be 100644
--- a/services/core/java/com/android/server/power/PowerManagerService.java
+++ b/services/core/java/com/android/server/power/PowerManagerService.java
@@ -686,6 +686,8 @@
         @Override
         public void onWakefulnessChangedLocked(int groupId, int wakefulness, long eventTime,
                 int reason, int uid, int opUid, String opPackageName, String details) {
+            mWakefulnessChanging = true;
+            mDirty |= DIRTY_WAKEFULNESS;
             if (wakefulness == WAKEFULNESS_AWAKE) {
                 // Kick user activity to prevent newly awake group from timing out instantly.
                 // The dream may end without user activity if the dream app crashes / is updated,
@@ -696,9 +698,8 @@
                         PowerManager.USER_ACTIVITY_EVENT_OTHER, flags, uid);
             }
             mDirty |= DIRTY_DISPLAY_GROUP_WAKEFULNESS;
+            mNotifier.onGroupWakefulnessChangeStarted(groupId, wakefulness, reason, eventTime);
             updateGlobalWakefulnessLocked(eventTime, reason, uid, opUid, opPackageName, details);
-            mNotifier.onPowerGroupWakefulnessChanged(groupId, wakefulness, reason,
-                    getGlobalWakefulnessLocked());
             updatePowerStateLocked();
         }
     }
@@ -2152,7 +2153,7 @@
             mDozeStartInProgress &= (newWakefulness == WAKEFULNESS_DOZING);
 
             if (mNotifier != null) {
-                mNotifier.onWakefulnessChangeStarted(newWakefulness, reason, eventTime);
+                mNotifier.onGlobalWakefulnessChangeStarted(newWakefulness, reason, eventTime);
             }
             mAttentionDetector.onWakefulnessChangeStarted(newWakefulness);
 
@@ -2163,15 +2164,6 @@
                     if (sQuiescent) {
                         mDirty |= DIRTY_QUIESCENT;
                     }
-                    PowerGroup defaultGroup = mPowerGroups.get(Display.DEFAULT_DISPLAY_GROUP);
-                    if (defaultGroup.getWakefulnessLocked() == WAKEFULNESS_DOZING) {
-                        // Workaround for b/187231320 where the AOD can get stuck in a "half on /
-                        // half off" state when a non-default-group VirtualDisplay causes the global
-                        // wakefulness to change to awake, even though the default display is
-                        // dozing. We set sandman summoned to restart dreaming to get it unstuck.
-                        // TODO(b/255688811) - fix this so that AOD never gets interrupted at all.
-                        defaultGroup.setSandmanSummonedLocked(true);
-                    }
                     break;
 
                 case WAKEFULNESS_ASLEEP:
@@ -2248,6 +2240,8 @@
 
     @GuardedBy("mLock")
     void onPowerGroupEventLocked(int event, PowerGroup powerGroup) {
+        mWakefulnessChanging = true;
+        mDirty |= DIRTY_WAKEFULNESS;
         final int groupId = powerGroup.getGroupId();
         if (event == DisplayGroupPowerChangeListener.DISPLAY_GROUP_REMOVED) {
             mPowerGroups.delete(groupId);
@@ -2260,6 +2254,11 @@
             // Kick user activity to prevent newly added group from timing out instantly.
             userActivityNoUpdateLocked(powerGroup, mClock.uptimeMillis(),
                     PowerManager.USER_ACTIVITY_EVENT_OTHER, /* flags= */ 0, Process.SYSTEM_UID);
+            mNotifier.onGroupWakefulnessChangeStarted(groupId,
+                    powerGroup.getWakefulnessLocked(), WAKE_REASON_DISPLAY_GROUP_ADDED,
+                    mClock.uptimeMillis());
+        } else if (event == DisplayGroupPowerChangeListener.DISPLAY_GROUP_REMOVED) {
+            mNotifier.onGroupRemoved(groupId);
         }
 
         if (oldWakefulness != newWakefulness) {
diff --git a/services/tests/servicestests/src/com/android/server/power/PowerManagerServiceTest.java b/services/tests/servicestests/src/com/android/server/power/PowerManagerServiceTest.java
index 21a11bc..52bf244 100644
--- a/services/tests/servicestests/src/com/android/server/power/PowerManagerServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/power/PowerManagerServiceTest.java
@@ -40,6 +40,7 @@
 import static org.mockito.ArgumentMatchers.isNull;
 import static org.mockito.ArgumentMatchers.same;
 import static org.mockito.Mockito.atLeastOnce;
+import static org.mockito.Mockito.atMost;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.spy;
@@ -1611,7 +1612,8 @@
         startSystem();
 
         assertThat(mService.getGlobalWakefulnessLocked()).isEqualTo(WAKEFULNESS_AWAKE);
-        verify(mNotifierMock, never()).onWakefulnessChangeStarted(anyInt(), anyInt(), anyLong());
+        verify(mNotifierMock, never()).onGlobalWakefulnessChangeStarted(anyInt(), anyInt(),
+                anyLong());
     }
 
     @Test
@@ -1630,7 +1632,7 @@
         startSystem();
 
         assertThat(mService.getGlobalWakefulnessLocked()).isEqualTo(WAKEFULNESS_ASLEEP);
-        verify(mNotifierMock).onWakefulnessChangeStarted(eq(WAKEFULNESS_ASLEEP), anyInt(),
+        verify(mNotifierMock).onGlobalWakefulnessChangeStarted(eq(WAKEFULNESS_ASLEEP), anyInt(),
                 anyLong());
     }
 
@@ -2112,7 +2114,7 @@
     }
 
     @Test
-    public void testMultiDisplay_defaultDozing_addNewDisplayDefaultGoesBackToDoze() {
+    public void testMultiDisplay_addNewDisplay_becomeGloballyAwakeButDefaultRemainsDozing() {
         final int nonDefaultDisplayGroupId = Display.DEFAULT_DISPLAY_GROUP + 1;
         final int nonDefaultDisplay = Display.DEFAULT_DISPLAY + 1;
         final AtomicReference<DisplayManagerInternal.DisplayGroupListener> listener =
@@ -2142,6 +2144,7 @@
         assertThat(mService.getWakefulnessLocked(Display.DEFAULT_DISPLAY_GROUP)).isEqualTo(
                 WAKEFULNESS_DOZING);
         assertThat(mService.getGlobalWakefulnessLocked()).isEqualTo(WAKEFULNESS_DOZING);
+        verify(mDreamManagerInternalMock).stopDream(anyBoolean(), anyString());
         verify(mDreamManagerInternalMock).startDream(eq(true), anyString());
 
         listener.get().onDisplayGroupAdded(nonDefaultDisplayGroupId);
@@ -2152,7 +2155,10 @@
                 WAKEFULNESS_AWAKE);
         assertThat(mService.getWakefulnessLocked(Display.DEFAULT_DISPLAY_GROUP)).isEqualTo(
                 WAKEFULNESS_DOZING);
-        verify(mDreamManagerInternalMock, times(2)).startDream(eq(true), anyString());
+
+        // Make sure there were no additional calls to stopDream or startDream
+        verify(mDreamManagerInternalMock, atMost(1)).stopDream(anyBoolean(), anyString());
+        verify(mDreamManagerInternalMock, atMost(1)).startDream(eq(true), anyString());
     }
 
     @Test
@@ -2169,7 +2175,7 @@
     }
 
     @Test
-    public void testMultiDisplay_onlyOneDisplaySleeps_onWakefulnessChangedEventFires() {
+    public void testMultiDisplay_onlyOneDisplaySleeps_onWakefulnessChangedEventsFire() {
         createService();
         startSystem();
         assertThat(mService.getGlobalWakefulnessLocked()).isEqualTo(WAKEFULNESS_AWAKE);
@@ -2177,12 +2183,14 @@
         assertThat(mService.getWakefulnessLocked(Display.DEFAULT_DISPLAY_GROUP)).isEqualTo(
                 WAKEFULNESS_ASLEEP);
 
-        verify(mNotifierMock).onPowerGroupWakefulnessChanged(eq(Display.DEFAULT_DISPLAY_GROUP),
-                eq(WAKEFULNESS_ASLEEP), anyInt(), eq(WAKEFULNESS_ASLEEP));
+        verify(mNotifierMock).onGroupWakefulnessChangeStarted(eq(Display.DEFAULT_DISPLAY_GROUP),
+                eq(WAKEFULNESS_ASLEEP), eq(PowerManager.GO_TO_SLEEP_REASON_APPLICATION), anyLong());
+        verify(mNotifierMock).onGlobalWakefulnessChangeStarted(eq(WAKEFULNESS_ASLEEP),
+                eq(PowerManager.GO_TO_SLEEP_REASON_APPLICATION), anyLong());
     }
 
     @Test
-    public void testMultiDisplay_bothDisplaysSleep_onWakefulnessChangedEventFiresCorrectly() {
+    public void testMultiDisplay_bothDisplaysSleep_onWakefulnessChangedEventsFireCorrectly() {
         final int nonDefaultDisplayGroupId = Display.DEFAULT_DISPLAY_GROUP + 1;
         final int nonDefaultDisplay = Display.DEFAULT_DISPLAY + 1;
         final AtomicReference<DisplayManagerInternal.DisplayGroupListener> listener =
@@ -2201,10 +2209,10 @@
         assertThat(mService.getGlobalWakefulnessLocked()).isEqualTo(WAKEFULNESS_AWAKE);
         listener.get().onDisplayGroupAdded(nonDefaultDisplayGroupId);
 
-        mService.setWakefulnessLocked(nonDefaultDisplayGroupId, WAKEFULNESS_ASLEEP, 0, 0, 0, 0,
-                null, null);
-        mService.setWakefulnessLocked(Display.DEFAULT_DISPLAY_GROUP, WAKEFULNESS_ASLEEP, 0, 0, 0, 0,
-                null, null);
+        mService.setWakefulnessLocked(nonDefaultDisplayGroupId, WAKEFULNESS_ASLEEP, 0, 0,
+                PowerManager.GO_TO_SLEEP_REASON_APPLICATION, 0, null, null);
+        mService.setWakefulnessLocked(Display.DEFAULT_DISPLAY_GROUP, WAKEFULNESS_ASLEEP, 0, 0,
+                PowerManager.GO_TO_SLEEP_REASON_APPLICATION, 0, null, null);
 
         assertThat(mService.getGlobalWakefulnessLocked()).isEqualTo(WAKEFULNESS_ASLEEP);
         assertThat(mService.getWakefulnessLocked(Display.DEFAULT_DISPLAY_GROUP)).isEqualTo(
@@ -2212,14 +2220,16 @@
         assertThat(mService.getWakefulnessLocked(nonDefaultDisplayGroupId)).isEqualTo(
                 WAKEFULNESS_ASLEEP);
 
-        verify(mNotifierMock).onPowerGroupWakefulnessChanged(eq(nonDefaultDisplayGroupId),
-                eq(WAKEFULNESS_ASLEEP), anyInt(), eq(WAKEFULNESS_AWAKE));
-        verify(mNotifierMock).onPowerGroupWakefulnessChanged(eq(Display.DEFAULT_DISPLAY_GROUP),
-                eq(WAKEFULNESS_ASLEEP), anyInt(), eq(WAKEFULNESS_ASLEEP));
+        verify(mNotifierMock).onGroupWakefulnessChangeStarted(eq(nonDefaultDisplayGroupId),
+                eq(WAKEFULNESS_ASLEEP), eq(PowerManager.GO_TO_SLEEP_REASON_APPLICATION), anyLong());
+        verify(mNotifierMock).onGroupWakefulnessChangeStarted(eq(Display.DEFAULT_DISPLAY_GROUP),
+                eq(WAKEFULNESS_ASLEEP), eq(PowerManager.GO_TO_SLEEP_REASON_APPLICATION), anyLong());
+        verify(mNotifierMock).onGlobalWakefulnessChangeStarted(eq(WAKEFULNESS_ASLEEP),
+                eq(PowerManager.GO_TO_SLEEP_REASON_APPLICATION), anyLong());
     }
 
     @Test
-    public void testMultiDisplay_separateWakeStates_onWakefulnessChangedEventFiresCorrectly() {
+    public void testMultiDisplay_separateWakeStates_onWakefulnessChangedEventsFireCorrectly() {
         final int nonDefaultDisplayGroupId = Display.DEFAULT_DISPLAY_GROUP + 1;
         final int nonDefaultDisplay = Display.DEFAULT_DISPLAY + 1;
         final AtomicReference<DisplayManagerInternal.DisplayGroupListener> listener =
@@ -2255,10 +2265,53 @@
                 WAKEFULNESS_ASLEEP);
         assertThat(mService.getWakefulnessLocked(nonDefaultDisplayGroupId)).isEqualTo(
                 WAKEFULNESS_AWAKE);
-        verify(mNotifierMock).onPowerGroupWakefulnessChanged(eq(Display.DEFAULT_DISPLAY_GROUP),
-                eq(WAKEFULNESS_ASLEEP), anyInt(), eq(WAKEFULNESS_AWAKE));
-        verify(mNotifierMock, never()).onPowerGroupWakefulnessChanged(
-                eq(nonDefaultDisplayGroupId), anyInt(), anyInt(), anyInt());
+        verify(mNotifierMock).onGroupWakefulnessChangeStarted(eq(nonDefaultDisplayGroupId),
+                eq(WAKEFULNESS_AWAKE), eq(PowerManager.WAKE_REASON_DISPLAY_GROUP_ADDED), anyLong());
+        verify(mNotifierMock).onGroupWakefulnessChangeStarted(eq(Display.DEFAULT_DISPLAY_GROUP),
+                eq(WAKEFULNESS_ASLEEP), eq(PowerManager.GO_TO_SLEEP_REASON_APPLICATION), anyLong());
+        verify(mNotifierMock, never()).onGlobalWakefulnessChangeStarted(eq(WAKEFULNESS_ASLEEP),
+                anyInt(), anyLong());
+    }
+
+    @Test
+    public void testMultiDisplay_oneDisplayGroupChanges_globalDoesNotChange() {
+        final int nonDefaultDisplayGroupId = Display.DEFAULT_DISPLAY_GROUP + 1;
+        final int nonDefaultDisplay = Display.DEFAULT_DISPLAY + 1;
+        final AtomicReference<DisplayManagerInternal.DisplayGroupListener> listener =
+                new AtomicReference<>();
+        doAnswer((Answer<Void>) invocation -> {
+            listener.set(invocation.getArgument(0));
+            return null;
+        }).when(mDisplayManagerInternalMock).registerDisplayGroupListener(any());
+        final DisplayInfo info = new DisplayInfo();
+        info.displayGroupId = nonDefaultDisplayGroupId;
+        when(mDisplayManagerInternalMock.getDisplayInfo(nonDefaultDisplay)).thenReturn(info);
+
+        createService();
+        startSystem();
+
+        listener.get().onDisplayGroupAdded(nonDefaultDisplayGroupId);
+
+        assertThat(mService.getWakefulnessLocked(Display.DEFAULT_DISPLAY_GROUP)).isEqualTo(
+                WAKEFULNESS_AWAKE);
+        assertThat(mService.getWakefulnessLocked(nonDefaultDisplayGroupId)).isEqualTo(
+                WAKEFULNESS_AWAKE);
+        assertThat(mService.getGlobalWakefulnessLocked()).isEqualTo(WAKEFULNESS_AWAKE);
+
+        long eventTime = mClock.now();
+        mService.setWakefulnessLocked(nonDefaultDisplayGroupId, WAKEFULNESS_ASLEEP, eventTime, 0,
+                PowerManager.GO_TO_SLEEP_REASON_APPLICATION, 0, null, null);
+
+        assertThat(mService.getWakefulnessLocked(Display.DEFAULT_DISPLAY_GROUP)).isEqualTo(
+                WAKEFULNESS_AWAKE);
+        assertThat(mService.getWakefulnessLocked(nonDefaultDisplayGroupId)).isEqualTo(
+                WAKEFULNESS_ASLEEP);
+        assertThat(mService.getGlobalWakefulnessLocked()).isEqualTo(WAKEFULNESS_AWAKE);
+        verify(mNotifierMock, never()).onGlobalWakefulnessChangeStarted(anyInt(), anyInt(),
+                anyLong());
+        verify(mNotifierMock, atMost(1)).onGroupWakefulnessChangeStarted(
+                eq(nonDefaultDisplayGroupId), eq(WAKEFULNESS_ASLEEP),
+                eq(PowerManager.GO_TO_SLEEP_REASON_APPLICATION), eq(eventTime));
     }
 
     @Test
diff --git a/services/tests/wmtests/src/com/android/server/policy/TestPhoneWindowManager.java b/services/tests/wmtests/src/com/android/server/policy/TestPhoneWindowManager.java
index 2665e19..5636795 100644
--- a/services/tests/wmtests/src/com/android/server/policy/TestPhoneWindowManager.java
+++ b/services/tests/wmtests/src/com/android/server/policy/TestPhoneWindowManager.java
@@ -233,8 +233,8 @@
         doNothing().when(mPhoneWindowManager).updateSettings();
         doNothing().when(mPhoneWindowManager).screenTurningOn(anyInt(), any());
         doNothing().when(mPhoneWindowManager).screenTurnedOn(anyInt());
-        doNothing().when(mPhoneWindowManager).startedWakingUp(anyInt());
-        doNothing().when(mPhoneWindowManager).finishedWakingUp(anyInt());
+        doNothing().when(mPhoneWindowManager).startedWakingUp(anyInt(), anyInt());
+        doNothing().when(mPhoneWindowManager).finishedWakingUp(anyInt(), anyInt());
 
         mPhoneWindowManager.init(new TestInjector(mContext, mWindowManagerFuncsImpl));
         mPhoneWindowManager.systemReady();
diff --git a/services/tests/wmtests/src/com/android/server/wm/TestWindowManagerPolicy.java b/services/tests/wmtests/src/com/android/server/wm/TestWindowManagerPolicy.java
index 2a2641e..1f7e3d9 100644
--- a/services/tests/wmtests/src/com/android/server/wm/TestWindowManagerPolicy.java
+++ b/services/tests/wmtests/src/com/android/server/wm/TestWindowManagerPolicy.java
@@ -114,24 +114,35 @@
     }
 
     @Override
-    public void startedWakingUp(@WakeReason int wakeReason) {
+    public void startedWakingUpGlobal(@WakeReason int reason) {
     }
 
     @Override
-    public void finishedWakingUp(@WakeReason int wakeReason) {
+    public void finishedWakingUpGlobal(@WakeReason int reason) {
     }
 
     @Override
-    public void startedGoingToSleep(@GoToSleepReason int sleepReason) {
+    public void startedGoingToSleepGlobal(@GoToSleepReason int reason) {
     }
 
     @Override
-    public void finishedGoingToSleep(@GoToSleepReason int sleepReason) {
+    public void finishedGoingToSleepGlobal(@GoToSleepReason int reason) {
     }
 
     @Override
-    public void onPowerGroupWakefulnessChanged(int groupId, int wakefulness,
-            @GoToSleepReason int pmSleepReason, int globalWakefulness) {
+    public void startedWakingUp(int displayGroupId, @WakeReason int wakeReason) {
+    }
+
+    @Override
+    public void finishedWakingUp(int displayGroupId, @WakeReason int wakeReason) {
+    }
+
+    @Override
+    public void startedGoingToSleep(int displayGroupId, @GoToSleepReason int sleepReason) {
+    }
+
+    @Override
+    public void finishedGoingToSleep(int displayGroupId, @GoToSleepReason int sleepReason) {
     }
 
     @Override