diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitchController.java b/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitchController.java
index 16eb21d8c4db4..4d196aa5466d3 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitchController.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardClockSwitchController.java
@@ -421,6 +421,7 @@ public class KeyguardClockSwitchController extends ViewController<KeyguardClockS
      * Refresh clock. Called in response to TIME_TICK broadcasts.
      */
     void refresh() {
+        mLogBuffer.log(TAG, LogLevel.INFO, "refresh");
         if (mSmartspaceController != null) {
             mSmartspaceController.requestSmartspaceUpdate();
         }
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardStatusViewController.java b/packages/SystemUI/src/com/android/keyguard/KeyguardStatusViewController.java
index fe6bbc16ef9f6..8e92941c79fa2 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardStatusViewController.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardStatusViewController.java
@@ -340,6 +340,7 @@ public class KeyguardStatusViewController extends ViewController<KeyguardStatusV
     private KeyguardUpdateMonitorCallback mInfoCallback = new KeyguardUpdateMonitorCallback() {
         @Override
         public void onTimeChanged() {
+            Slog.v(TAG, "onTimeChanged");
             refreshTime();
         }