diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index ef149ac090b75..fa5821fcc2262 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -1110,28 +1110,18 @@
          If this flag is false, then the ambient light level estimate will be adjusted more
          gradually in the same manner that normally happens when the screen is on according to the
          brightening or dimming debounce thresholds.  As a result, it may take somewhat longer to
-         adapt to the environment.  This mode may be better suited for watches. -->
+         adapt to the environment. This mode may be better suited for watches. -->
     <bool name="config_autoBrightnessResetAmbientLuxAfterWarmUp">true</bool>
 
     <!-- Period of time in which to consider light samples in milliseconds. -->
     <integer name="config_autoBrightnessAmbientLightHorizon">10000</integer>
 
-    <!-- This flag enables light sensor sampling while dozing. A single sample is taken upon
-         entering doze mode, and another sample is taken every time the display enters STATE_DOZE
-         or STATE_DOZE_SUSPEND. It is recommended that config_dozeSensorLuxLevels and
-         config_dozeBrightnessBacklightValues have entries so that the doze mode brightness can be
-         determined dynamically.
-     -->
-    <bool name="config_allowAutoBrightnessActiveDozeLightSensor">false</bool>
-
-    <!-- This flag should be used with config_allowAutoBrightnessActiveDozeLightSensor set to true.
-
-         The screen brightness of a device is based off of a ring buffer of the last n seconds of
+    <!-- The screen brightness of a device is based off of a ring buffer of the last n seconds of
          ambient light sensor sample readings.
 
-         If this flag is true, then this buffer is cleared every time a new sample is taken in doze
-         mode and the screen brightness is based off the new reading. This mode may be better suited
-         for watches.
+         If this flag is true, then this buffer is cleared and the screen brightness is based off of
+         ambient light sensor readings that are obtained while the device is dozing.  This mode may
+         be better suited for watches.
 
          If this flag is false, then this buffer is untouched. -->
     <bool name="config_useNewSensorSamplesForDoze">false</bool>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 56e109ce7c0b8..6de876dcdf528 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -1669,7 +1669,6 @@
   <java-symbol type="array" name="config_notificationFallbackVibePattern" />
   <java-symbol type="array" name="config_onlySingleDcAllowed" />
   <java-symbol type="bool" name="config_useNewSensorSamplesForDoze" />
-  <java-symbol type="bool" name="config_allowAutoBrightnessActiveDozeLightSensor" />
   <java-symbol type="bool" name="config_useAttentionLight" />
   <java-symbol type="bool" name="config_animateScreenLights" />
   <java-symbol type="bool" name="config_automatic_brightness_available" />
diff --git a/services/core/java/com/android/server/display/AutomaticBrightnessController.java b/services/core/java/com/android/server/display/AutomaticBrightnessController.java
index 4d5ae0781059c..31e8ae2cb39d8 100644
--- a/services/core/java/com/android/server/display/AutomaticBrightnessController.java
+++ b/services/core/java/com/android/server/display/AutomaticBrightnessController.java
@@ -120,7 +120,7 @@ class AutomaticBrightnessController {
     // weighting values positive.
     private final int mWeightingIntercept;
 
-    // accessor object for determining lux levels
+    // Accessor object for determining lux levels.
     private final LuxLevels mLuxLevels;
 
     // Amount of time to delay auto-brightness after screen on while waiting for
@@ -195,10 +195,8 @@ class AutomaticBrightnessController {
     // Are we going to adjust brightness while dozing.
     private boolean mDozing;
 
-    // True if we are collecting light samples when dozing to set the screen brightness. A single
-    // light sample is collected when entering doze mode. If autobrightness is enabled, calls to
-    // DisplayPowerController#updatePowerState in doze mode will also collect light samples.
-    private final boolean mUseActiveDozeLightSensorConfig;
+    // True if we are collecting one last light sample when dozing to set the screen brightness.
+    private boolean mActiveDozeLightSensor = false;
 
     // True if the ambient light sensor ring buffer should be cleared when entering doze mode.
     private final boolean mUseNewSensorSamplesForDoze;
@@ -219,8 +217,8 @@ class AutomaticBrightnessController {
             int lightSensorRate, int initialLightSensorRate, long brighteningLightDebounceConfig,
             long darkeningLightDebounceConfig, boolean resetAmbientLuxAfterWarmUpConfig,
             int ambientLightHorizon, float autoBrightnessAdjustmentMaxGamma,
-            boolean activeDozeLightSensor, boolean useNewSensorSamplesForDoze,
-            float darkHorizonThresholdFactor, int darkAmbientLightHorizon, LuxLevels luxLevels) {
+            boolean useNewSensorSamplesForDoze, float darkHorizonThresholdFactor,
+            int darkAmbientLightHorizon, LuxLevels luxLevels) {
         mCallbacks = callbacks;
         mTwilight = LocalServices.getService(TwilightManager.class);
         mSensorManager = sensorManager;
@@ -239,10 +237,10 @@ class AutomaticBrightnessController {
         mWeightingIntercept = ambientLightHorizon;
         mScreenAutoBrightnessAdjustmentMaxGamma = autoBrightnessAdjustmentMaxGamma;
         mUseNewSensorSamplesForDoze = useNewSensorSamplesForDoze;
-        mUseActiveDozeLightSensorConfig = activeDozeLightSensor;
         mDarkHorizonThresholdFactor = darkHorizonThresholdFactor;
         mDarkAmbientLightHorizon = darkAmbientLightHorizon;
         mLuxLevels = luxLevels;
+        mActiveDozeLightSensor = mLuxLevels.hasDynamicDozeBrightness();
 
         mHandler = new AutomaticBrightnessHandler(looper);
         mAmbientLightRingBuffer =
@@ -273,18 +271,21 @@ class AutomaticBrightnessController {
         // switch to a wake-up light sensor instead but for now we will simply disable the sensor
         // and hold onto the last computed screen auto brightness.  We save the dozing flag for
         // debugging purposes.
-        boolean enableSensor = enable && (dozing ? mUseActiveDozeLightSensorConfig : true);
-        if (enableSensor && dozing && !mDozing && mLightSensorEnabled
-                && mUseNewSensorSamplesForDoze) {
-            mAmbientLightRingBuffer.clear();
-            mInitialHorizonAmbientLightRingBuffer.clear();
-            if (DEBUG) {
-                Slog.d(TAG, "configure: Clearing ambient light ring buffers when entering doze.");
-            }
-            mAmbientLuxValid = false;
-            adjustLightSensorRate(mInitialLightSensorRate);
-        }
         mDozing = dozing;
+        boolean enableSensor = enable && !dozing;
+        if (enableSensor && !mLightSensorEnabled && mActiveDozeLightSensor) {
+            mActiveDozeLightSensor = false;
+        } else if (!enableSensor && mLightSensorEnabled) {
+            // keep the light sensor active until another light sample is taken while dozing
+            mActiveDozeLightSensor = true;
+            adjustLightSensorRate(mInitialLightSensorRate);
+            if (mUseNewSensorSamplesForDoze) {
+                mAmbientLightRingBuffer.clear();
+                mInitialHorizonAmbientLightRingBuffer.clear();
+                mAmbientLuxValid = false;
+                return;
+            }
+        }
         boolean changed = setLightSensorEnabled(enableSensor);
         changed |= setScreenAutoBrightnessAdjustment(adjustment);
         changed |= setUseTwilight(useTwilight);
@@ -382,7 +383,7 @@ class AutomaticBrightnessController {
         }
         applyLightSensorMeasurement(time, lux);
         updateAmbientLux(time);
-        if (mUseActiveDozeLightSensorConfig && mDozing) {
+        if (mActiveDozeLightSensor) {
             // disable the ambient light sensor and update the screen brightness
             if (DEBUG) {
                 Slog.d(TAG, "handleLightSensorEvent: doze ambient light sensor reading: " + lux);
@@ -634,7 +635,7 @@ class AutomaticBrightnessController {
         }
 
         int newScreenAutoBrightness;
-        if (mUseActiveDozeLightSensorConfig && mDozing) {
+        if (mActiveDozeLightSensor) {
             newScreenAutoBrightness = mLuxLevels.getDozeBrightness(mAmbientLux);
         } else {
             newScreenAutoBrightness =
diff --git a/services/core/java/com/android/server/display/DisplayPowerController.java b/services/core/java/com/android/server/display/DisplayPowerController.java
index 421015b6f7010..a5c2a09327289 100644
--- a/services/core/java/com/android/server/display/DisplayPowerController.java
+++ b/services/core/java/com/android/server/display/DisplayPowerController.java
@@ -158,9 +158,6 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
     // True if should use light sensor to automatically determine doze screen brightness.
     private final boolean mAllowAutoBrightnessWhileDozingConfig;
 
-    // True if collecting light sensor samples in doze mode.
-    private boolean mUseActiveDozeLightSensorConfig;
-
     // True if we should fade the screen while turning it off, false if we should play
     // a stylish color fade animation instead.
     private boolean mColorFadeFadesConfig;
@@ -264,6 +261,9 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
     // The first autobrightness value set when entering RAMP_STATE_SKIP_INITIAL.
     private int mInitialAutoBrightness;
 
+    // Accessor object for determining lux levels.
+    private LuxLevels mLuxLevels;
+
     // The controller for the automatic brightness level.
     private AutomaticBrightnessController mAutomaticBrightnessController;
 
@@ -383,9 +383,7 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
                     com.android.internal.R.array.config_dozeBrightnessBacklightValues);
             boolean useNewSensorSamplesForDoze = resources.getBoolean(
                     com.android.internal.R.bool.config_useNewSensorSamplesForDoze);
-            mUseActiveDozeLightSensorConfig = resources.getBoolean(
-                    com.android.internal.R.bool.config_allowAutoBrightnessActiveDozeLightSensor);
-            LuxLevels luxLevels = new LuxLevels(brightHysteresisLevels, darkHysteresisLevels,
+            mLuxLevels = new LuxLevels(brightHysteresisLevels, darkHysteresisLevels,
                     luxHysteresisLevels, dozeSensorLuxLevels, dozeBrightnessBacklightValues);
 
             Spline screenAutoBrightnessSpline = createAutoBrightnessSpline(lux, screenBrightness);
@@ -414,9 +412,8 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
                         mScreenBrightnessRangeMaximum, dozeScaleFactor, lightSensorRate,
                         initialLightSensorRate, brighteningLightDebounce, darkeningLightDebounce,
                         autoBrightnessResetAmbientLuxAfterWarmUp, ambientLightHorizon,
-                        autoBrightnessAdjustmentMaxGamma, mUseActiveDozeLightSensorConfig,
-                        useNewSensorSamplesForDoze, darkHorizonThresholdFactor,
-                        darkAmbientLightHorizon, luxLevels);
+                        autoBrightnessAdjustmentMaxGamma, useNewSensorSamplesForDoze,
+                        darkHorizonThresholdFactor, darkAmbientLightHorizon, mLuxLevels);
             }
         }
 
@@ -670,9 +667,8 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
         if (mAutomaticBrightnessController != null) {
             final boolean autoBrightnessEnabledInDoze = mAllowAutoBrightnessWhileDozingConfig
                     && (state == Display.STATE_DOZE || state == Display.STATE_DOZE_SUSPEND);
-            autoBrightnessEnabled = (mPowerRequest.useAutoBrightness
+            autoBrightnessEnabled = mPowerRequest.useAutoBrightness
                     && (state == Display.STATE_ON || autoBrightnessEnabledInDoze)
-                    || mUseActiveDozeLightSensorConfig && autoBrightnessEnabledInDoze)
                     && brightness < 0;
             final boolean userInitiatedChange = autoBrightnessAdjustmentChanged
                     && mPowerRequest.brightnessSetByUser;
@@ -711,11 +707,13 @@ final class DisplayPowerController implements AutomaticBrightnessController.Call
             mAppliedAutoBrightness = false;
         }
 
-        // Use default brightness when dozing unless overridden or if collecting sensor samples.
+        // Use default brightness when dozing unless overridden or if using dynamic doze brightness.
         if (state == Display.STATE_DOZE || state == Display.STATE_DOZE_SUSPEND) {
             if (brightness < 0) {
                 brightness = mScreenBrightnessDozeConfig;
-            } else if (mUseActiveDozeLightSensorConfig) {
+            } else if (autoBrightnessEnabled && mLuxLevels.hasDynamicDozeBrightness()) {
+                brightness = mAutomaticBrightnessController.getAutomaticScreenBrightness();
+            } else {
                 brightness = Math.min(brightness, mScreenBrightnessDozeConfig);
                 if (DEBUG) {
                     Slog.d(TAG, "updatePowerState: ALS-based doze brightness: " + brightness);
diff --git a/services/core/java/com/android/server/display/LuxLevels.java b/services/core/java/com/android/server/display/LuxLevels.java
index a796871874c42..41169cb35aee9 100644
--- a/services/core/java/com/android/server/display/LuxLevels.java
+++ b/services/core/java/com/android/server/display/LuxLevels.java
@@ -29,7 +29,7 @@ final class LuxLevels {
     private final float[] mBrightLevels;
     private final float[] mDarkLevels;
     private final float[] mLuxHysteresisLevels;
-    private final float[] mDozeBrightnessBacklightValues;
+    private final float[] mDozeBacklightLevels;
     private final float[] mDozeSensorLuxLevels;
 
   /**
@@ -39,29 +39,29 @@ final class LuxLevels {
    * {@code luxLevels} has length n+1.
    *
    * {@code dozeSensorLuxLevels} has length r.
-   * {@code dozeBrightnessBacklightValues} has length r+1.
+   * {@code dozeBacklightLevels} has length r+1.
    *
    * @param brightLevels an array of brightening hysteresis constraint constants
    * @param darkLevels an array of darkening hysteresis constraint constants
    * @param luxHysteresisLevels a monotonically increasing array of illuminance thresholds in lux
    * @param dozeSensorLuxLevels a monotonically increasing array of ALS thresholds in lux
-   * @param dozeBrightnessBacklightValues an array of screen brightness values for doze mode in lux
+   * @param dozeBacklightLevels an array of screen brightness values for doze mode in lux
    */
     public LuxLevels(int[] brightLevels, int[] darkLevels, int[] luxHysteresisLevels,
-            int[] dozeSensorLuxLevels, int[] dozeBrightnessBacklightValues) {
+            int[] dozeSensorLuxLevels, int[] dozeBacklightLevels) {
         if (brightLevels.length != darkLevels.length ||
             darkLevels.length !=luxHysteresisLevels.length + 1) {
             throw new IllegalArgumentException("Mismatch between hysteresis array lengths.");
         }
-        if (dozeBrightnessBacklightValues.length > 0 && dozeSensorLuxLevels.length > 0
-            && dozeBrightnessBacklightValues.length != dozeSensorLuxLevels.length + 1) {
+        if (dozeBacklightLevels.length > 0 && dozeSensorLuxLevels.length > 0
+            && dozeBacklightLevels.length != dozeSensorLuxLevels.length + 1) {
             throw new IllegalArgumentException("Mismatch between doze lux array lengths.");
         }
         mBrightLevels = setArrayFormat(brightLevels, 1000.0f);
         mDarkLevels = setArrayFormat(darkLevels, 1000.0f);
         mLuxHysteresisLevels = setArrayFormat(luxHysteresisLevels, 1.0f);
         mDozeSensorLuxLevels = setArrayFormat(dozeSensorLuxLevels, 1.0f);
-        mDozeBrightnessBacklightValues = setArrayFormat(dozeBrightnessBacklightValues, 1.0f);
+        mDozeBacklightLevels = setArrayFormat(dozeBacklightLevels, 1.0f);
     }
 
     /**
@@ -94,7 +94,7 @@ final class LuxLevels {
      * Return the doze backlight brightness level for the given ambient sensor lux level.
      */
     public int getDozeBrightness(float lux) {
-        int dozeBrightness = (int) getReferenceLevel(lux, mDozeBrightnessBacklightValues,
+        int dozeBrightness = (int) getReferenceLevel(lux, mDozeBacklightLevels,
             mDozeSensorLuxLevels);
         if (DEBUG) {
             Slog.d(TAG, "doze brightness: " + dozeBrightness + ", lux=" + lux);