Add logging for communal scene changes

This will help determine what triggered the scene change when debugging
issues.

Bug: 358695869
Test: atest SystemUITests
Flag: com.android.systemui.communal_hub
Change-Id: Ie747568b5673da2173a3cf5ceeac0a0dcf38e26c

26 files changed, 280 insertions, 78 deletions

diff --git a/packages/SystemUI/compose/features/src/com/android/systemui/communal/ui/compose/CommunalHub.kt b/packages/SystemUI/compose/features/src/com/android/systemui/communal/ui/compose/CommunalHub.kt
index b93b0490816d..7472d818d71a 100644
--- a/packages/SystemUI/compose/features/src/com/android/systemui/communal/ui/compose/CommunalHub.kt
+++ b/packages/SystemUI/compose/features/src/com/android/systemui/communal/ui/compose/CommunalHub.kt
@@ -1410,7 +1410,10 @@ fun AccessibilityContainer(viewModel: BaseCommunalViewModel, content: @Composabl
                                     R.string.accessibility_action_label_close_communal_hub
                                 )
                             ) {
-                                viewModel.changeScene(CommunalScenes.Blank)
+                                viewModel.changeScene(
+                                    CommunalScenes.Blank,
+                                    "closed by accessibility"
+                                )
                                 true
                             },
                             CustomAccessibilityAction(
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/CommunalSceneStartableTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/CommunalSceneStartableTest.kt
index 9ccf99b301b1..70529cc762e0 100644
--- a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/CommunalSceneStartableTest.kt
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/CommunalSceneStartableTest.kt
@@ -112,7 +112,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
 
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
 
                 communalSceneInteractor.setEditModeState(EditModeState.STARTING)
@@ -133,7 +133,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
 
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
 
                 communalSceneInteractor.setIsLaunchingWidget(true)
@@ -154,7 +154,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
 
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
 
                 communalSceneInteractor.setIsLaunchingWidget(false)
@@ -174,7 +174,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
         with(kosmos) {
             testScope.runTest {
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
 
                 communalInteractor.setEditModeOpen(true)
@@ -213,7 +213,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 whenever(centralSurfaces.isLaunchingActivityOverLockscreen).thenReturn(false)
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
 
                 updateDocked(true)
@@ -233,7 +233,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 whenever(centralSurfaces.isLaunchingActivityOverLockscreen).thenReturn(true)
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
 
                 updateDocked(true)
@@ -270,7 +270,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
         with(kosmos) {
             testScope.runTest {
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
 
                 fakeKeyguardTransitionRepository.sendTransitionSteps(
@@ -292,7 +292,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
         with(kosmos) {
             testScope.runTest {
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
 
                 fakeKeyguardTransitionRepository.sendTransitionSteps(
@@ -320,7 +320,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
     fun dockingOnLockscreen_forcesCommunal() =
         with(kosmos) {
             testScope.runTest {
-                communalSceneInteractor.changeScene(CommunalScenes.Blank)
+                communalSceneInteractor.changeScene(CommunalScenes.Blank, "test")
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
 
                 // device is docked while on the lockscreen
@@ -342,7 +342,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
     fun dockingOnLockscreen_doesNotForceCommunalIfDreamStarts() =
         with(kosmos) {
             testScope.runTest {
-                communalSceneInteractor.changeScene(CommunalScenes.Blank)
+                communalSceneInteractor.changeScene(CommunalScenes.Blank, "test")
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
 
                 // device is docked while on the lockscreen
@@ -374,7 +374,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 // Device is dreaming and on communal.
                 updateDreaming(true)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
 
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
@@ -391,7 +391,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 // Device is not dreaming and on communal.
                 updateDreaming(false)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
 
                 // Scene stays as Communal
                 advanceTimeBy(SCREEN_TIMEOUT.milliseconds)
@@ -406,7 +406,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 // Device is dreaming and on communal.
                 updateDreaming(true)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
 
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
@@ -429,7 +429,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 // Device is on communal, but not dreaming.
                 updateDreaming(false)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
 
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
@@ -450,7 +450,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
         with(kosmos) {
             testScope.runTest {
                 // Device is on communal.
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
 
                 // Device stays on the hub after the timeout since we're not dreaming.
                 advanceTimeBy(SCREEN_TIMEOUT.milliseconds * 2)
@@ -471,7 +471,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
             testScope.runTest {
                 // Device is dreaming and on communal.
                 updateDreaming(true)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
 
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
@@ -500,7 +500,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
 
                 // Device is dreaming and on communal.
                 updateDreaming(true)
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
 
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
                 assertThat(scene).isEqualTo(CommunalScenes.Communal)
@@ -520,7 +520,7 @@ class CommunalSceneStartableTest : SysuiTestCase() {
         with(kosmos) {
             testScope.runTest {
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
-                communalSceneInteractor.changeScene(CommunalScenes.Blank)
+                communalSceneInteractor.changeScene(CommunalScenes.Blank, "test")
                 assertThat(scene).isEqualTo(CommunalScenes.Blank)
 
                 fakeKeyguardTransitionRepository.sendTransitionSteps(
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalInteractorTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalInteractorTest.kt
index e57a4cbc230e..864795b062be 100644
--- a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalInteractorTest.kt
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalInteractorTest.kt
@@ -482,7 +482,7 @@ class CommunalInteractorTest : SysuiTestCase() {
         testScope.runTest {
             val targetScene = CommunalScenes.Communal
 
-            underTest.changeScene(targetScene)
+            underTest.changeScene(targetScene, "test")
 
             val desiredScene = collectLastValue(communalRepository.currentScene)
             runCurrent()
@@ -635,7 +635,7 @@ class CommunalInteractorTest : SysuiTestCase() {
             runCurrent()
             assertThat(isCommunalShowing()).isEqualTo(false)
 
-            underTest.changeScene(CommunalScenes.Communal)
+            underTest.changeScene(CommunalScenes.Communal, "test")
 
             isCommunalShowing = collectLastValue(underTest.isCommunalShowing)
             runCurrent()
@@ -659,12 +659,12 @@ class CommunalInteractorTest : SysuiTestCase() {
             assertThat(isCommunalShowing).isFalse()
 
             // Verify scene changes (without the flag) to communal sets the value to true
-            underTest.changeScene(CommunalScenes.Communal)
+            underTest.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
             assertThat(isCommunalShowing).isTrue()
 
             // Verify scene changes (without the flag) to blank sets the value back to false
-            underTest.changeScene(CommunalScenes.Blank)
+            underTest.changeScene(CommunalScenes.Blank, "test")
             runCurrent()
             assertThat(isCommunalShowing).isFalse()
         }
@@ -679,7 +679,7 @@ class CommunalInteractorTest : SysuiTestCase() {
             assertThat(isCommunalShowing).isFalse()
 
             // Verify scene changes without the flag doesn't have any impact
-            underTest.changeScene(CommunalScenes.Communal)
+            underTest.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
             assertThat(isCommunalShowing).isFalse()
 
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractorTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractorTest.kt
index 43293c7a50ca..ed7e9107240e 100644
--- a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractorTest.kt
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractorTest.kt
@@ -53,7 +53,7 @@ class CommunalSceneInteractorTest : SysuiTestCase() {
             val currentScene by collectLastValue(underTest.currentScene)
             assertThat(currentScene).isEqualTo(CommunalScenes.Blank)
 
-            underTest.changeScene(CommunalScenes.Communal)
+            underTest.changeScene(CommunalScenes.Communal, "test")
             assertThat(currentScene).isEqualTo(CommunalScenes.Communal)
         }
 
@@ -63,7 +63,7 @@ class CommunalSceneInteractorTest : SysuiTestCase() {
             val currentScene by collectLastValue(underTest.currentScene)
             assertThat(currentScene).isEqualTo(CommunalScenes.Blank)
 
-            underTest.snapToScene(CommunalScenes.Communal)
+            underTest.snapToScene(CommunalScenes.Communal, "test")
             assertThat(currentScene).isEqualTo(CommunalScenes.Communal)
         }
 
@@ -75,6 +75,7 @@ class CommunalSceneInteractorTest : SysuiTestCase() {
             assertThat(currentScene).isEqualTo(CommunalScenes.Blank)
             underTest.snapToScene(
                 CommunalScenes.Communal,
+                "test",
                 ActivityTransitionAnimator.TIMINGS.totalDuration
             )
             assertThat(currentScene).isEqualTo(CommunalScenes.Blank)
@@ -86,7 +87,7 @@ class CommunalSceneInteractorTest : SysuiTestCase() {
     fun changeSceneForActivityStartOnDismissKeyguard() =
         testScope.runTest {
             val currentScene by collectLastValue(underTest.currentScene)
-            underTest.snapToScene(CommunalScenes.Communal)
+            underTest.snapToScene(CommunalScenes.Communal, "test")
             assertThat(currentScene).isEqualTo(CommunalScenes.Communal)
 
             underTest.changeSceneForActivityStartOnDismissKeyguard()
@@ -97,7 +98,7 @@ class CommunalSceneInteractorTest : SysuiTestCase() {
     fun changeSceneForActivityStartOnDismissKeyguard_willNotChangeScene_forEditModeActivity() =
         testScope.runTest {
             val currentScene by collectLastValue(underTest.currentScene)
-            underTest.snapToScene(CommunalScenes.Communal)
+            underTest.snapToScene(CommunalScenes.Communal, "test")
             assertThat(currentScene).isEqualTo(CommunalScenes.Communal)
 
             underTest.setEditModeState(EditModeState.STARTING)
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalTutorialInteractorTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalTutorialInteractorTest.kt
index 3a23e14e2777..7e28e19d0ee0 100644
--- a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalTutorialInteractorTest.kt
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/domain/interactor/CommunalTutorialInteractorTest.kt
@@ -158,7 +158,7 @@ class CommunalTutorialInteractorTest : SysuiTestCase() {
             kosmos.setCommunalAvailable(true)
             communalTutorialRepository.setTutorialSettingState(HUB_MODE_TUTORIAL_NOT_STARTED)
 
-            communalInteractor.changeScene(CommunalScenes.Blank)
+            communalInteractor.changeScene(CommunalScenes.Blank, "test")
 
             assertThat(tutorialSettingState).isEqualTo(HUB_MODE_TUTORIAL_NOT_STARTED)
         }
@@ -171,7 +171,7 @@ class CommunalTutorialInteractorTest : SysuiTestCase() {
             goToCommunal()
             communalTutorialRepository.setTutorialSettingState(HUB_MODE_TUTORIAL_STARTED)
 
-            communalInteractor.changeScene(CommunalScenes.Blank)
+            communalInteractor.changeScene(CommunalScenes.Blank, "test")
 
             assertThat(tutorialSettingState).isEqualTo(HUB_MODE_TUTORIAL_COMPLETED)
         }
@@ -184,13 +184,13 @@ class CommunalTutorialInteractorTest : SysuiTestCase() {
             goToCommunal()
             communalTutorialRepository.setTutorialSettingState(HUB_MODE_TUTORIAL_COMPLETED)
 
-            communalInteractor.changeScene(CommunalScenes.Blank)
+            communalInteractor.changeScene(CommunalScenes.Blank, "test")
 
             assertThat(tutorialSettingState).isEqualTo(HUB_MODE_TUTORIAL_COMPLETED)
         }
 
     private suspend fun goToCommunal() {
         kosmos.setCommunalAvailable(true)
-        communalInteractor.changeScene(CommunalScenes.Communal)
+        communalInteractor.changeScene(CommunalScenes.Communal, "test")
     }
 }
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/widgets/CommunalTransitionAnimatorControllerTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/widgets/CommunalTransitionAnimatorControllerTest.kt
index e36fd75445e2..a052b078167d 100644
--- a/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/widgets/CommunalTransitionAnimatorControllerTest.kt
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/communal/widgets/CommunalTransitionAnimatorControllerTest.kt
@@ -76,7 +76,7 @@ class CommunalTransitionAnimatorControllerTest : SysuiTestCase() {
                 val launching by collectLastValue(communalSceneInteractor.isLaunchingWidget)
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
 
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 Truth.assertThat(scene).isEqualTo(CommunalScenes.Communal)
                 communalSceneInteractor.setIsLaunchingWidget(true)
                 assertTrue(launching!!)
@@ -103,7 +103,7 @@ class CommunalTransitionAnimatorControllerTest : SysuiTestCase() {
                 val launching by collectLastValue(communalSceneInteractor.isLaunchingWidget)
                 val scene by collectLastValue(communalSceneInteractor.currentScene)
 
-                communalSceneInteractor.changeScene(CommunalScenes.Communal)
+                communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
                 Truth.assertThat(scene).isEqualTo(CommunalScenes.Communal)
                 communalSceneInteractor.setIsLaunchingWidget(true)
                 assertTrue(launching!!)
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/dreams/DreamOverlayServiceTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/dreams/DreamOverlayServiceTest.kt
index 7a86e57779b9..da82b5f4a1f7 100644
--- a/packages/SystemUI/multivalentTests/src/com/android/systemui/dreams/DreamOverlayServiceTest.kt
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/dreams/DreamOverlayServiceTest.kt
@@ -68,7 +68,6 @@ import com.android.systemui.navigationbar.gestural.domain.GestureInteractor
 import com.android.systemui.testKosmos
 import com.android.systemui.touch.TouchInsetManager
 import com.android.systemui.util.concurrency.FakeExecutor
-import com.android.systemui.util.mockito.any
 import com.android.systemui.util.mockito.whenever
 import com.android.systemui.util.time.FakeSystemClock
 import com.google.common.truth.Truth.assertThat
@@ -87,6 +86,7 @@ import org.mockito.Mockito.clearInvocations
 import org.mockito.Mockito.isNull
 import org.mockito.Mockito.verify
 import org.mockito.MockitoAnnotations
+import org.mockito.kotlin.any
 import org.mockito.kotlin.argumentCaptor
 import org.mockito.kotlin.eq
 import org.mockito.kotlin.spy
@@ -669,7 +669,7 @@ class DreamOverlayServiceTest : SysuiTestCase() {
             runCurrent()
             verify(mDreamOverlayCallback).onRedirectWake(true)
             client.onWakeRequested()
-            verify(mCommunalInteractor).changeScene(eq(CommunalScenes.Communal), isNull())
+            verify(mCommunalInteractor).changeScene(eq(CommunalScenes.Communal), any(), isNull())
             verify(mUiEventLogger).log(CommunalUiEvent.DREAM_TO_COMMUNAL_HUB_DREAM_AWAKE_START)
         }
 
diff --git a/packages/SystemUI/multivalentTests/src/com/android/systemui/keyguard/domain/interactor/KeyguardTransitionScenariosTest.kt b/packages/SystemUI/multivalentTests/src/com/android/systemui/keyguard/domain/interactor/KeyguardTransitionScenariosTest.kt
index 8c1e8de315b1..9792c28d5023 100644
--- a/packages/SystemUI/multivalentTests/src/com/android/systemui/keyguard/domain/interactor/KeyguardTransitionScenariosTest.kt
+++ b/packages/SystemUI/multivalentTests/src/com/android/systemui/keyguard/domain/interactor/KeyguardTransitionScenariosTest.kt
@@ -845,7 +845,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
             runTransitionAndSetWakefulness(KeyguardState.LOCKSCREEN, KeyguardState.GONE)
 
             // WHEN the glanceable hub is shown
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
 
             assertThat(transitionRepository)
@@ -1004,7 +1004,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
     fun alternateBouncerToGlanceableHub() =
         testScope.runTest {
             // GIVEN the device is idle on the glanceable hub
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
             clearInvocations(transitionRepository)
 
@@ -1123,7 +1123,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
     fun primaryBouncerToGlanceableHub() =
         testScope.runTest {
             // GIVEN the device is idle on the glanceable hub
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
 
             // GIVEN a prior transition has run to PRIMARY_BOUNCER
@@ -1157,7 +1157,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
             advanceTimeBy(600L)
 
             // GIVEN the device is idle on the glanceable hub
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
 
             // GIVEN a prior transition has run to PRIMARY_BOUNCER
@@ -1971,7 +1971,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
     fun glanceableHubToLockscreen_communalKtfRefactor() =
         testScope.runTest {
             // GIVEN a prior transition has run to GLANCEABLE_HUB
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
             clearInvocations(transitionRepository)
 
@@ -2035,7 +2035,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
     fun glanceableHubToDozing_communalKtfRefactor() =
         testScope.runTest {
             // GIVEN a prior transition has run to GLANCEABLE_HUB
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
             clearInvocations(transitionRepository)
 
@@ -2136,7 +2136,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
     fun glanceableHubToOccluded_communalKtfRefactor() =
         testScope.runTest {
             // GIVEN a prior transition has run to GLANCEABLE_HUB
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
             clearInvocations(transitionRepository)
 
@@ -2184,7 +2184,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
     fun glanceableHubToGone_communalKtfRefactor() =
         testScope.runTest {
             // GIVEN a prior transition has run to GLANCEABLE_HUB
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
             clearInvocations(transitionRepository)
 
@@ -2265,7 +2265,7 @@ class KeyguardTransitionScenariosTest(flags: FlagsParameterization?) : SysuiTest
             advanceTimeBy(600L)
 
             // GIVEN a prior transition has run to GLANCEABLE_HUB
-            communalSceneInteractor.changeScene(CommunalScenes.Communal)
+            communalSceneInteractor.changeScene(CommunalScenes.Communal, "test")
             runCurrent()
             clearInvocations(transitionRepository)
 
diff --git a/packages/SystemUI/src/com/android/systemui/communal/CommunalSceneStartable.kt b/packages/SystemUI/src/com/android/systemui/communal/CommunalSceneStartable.kt
index b7c02ea91a6b..6e01393015ed 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/CommunalSceneStartable.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/CommunalSceneStartable.kt
@@ -112,7 +112,11 @@ constructor(
                         communalSceneInteractor.editModeState.value == EditModeState.STARTING ||
                             communalSceneInteractor.isLaunchingWidget.value
                     if (!delaySceneTransition) {
-                        communalSceneInteractor.changeScene(nextScene, nextTransition)
+                        communalSceneInteractor.changeScene(
+                            newScene = nextScene,
+                            loggingReason = "KTF syncing",
+                            transitionKey = nextTransition,
+                        )
                     }
                 }
                 .launchIn(applicationScope)
@@ -176,7 +180,10 @@ constructor(
                     if (scene == CommunalScenes.Communal && isDreaming && timeoutJob == null) {
                         // If dreaming starts after timeout has expired, ex. if dream restarts under
                         // the hub, just close the hub immediately.
-                        communalSceneInteractor.changeScene(CommunalScenes.Blank)
+                        communalSceneInteractor.changeScene(
+                            CommunalScenes.Blank,
+                            "dream started after timeout",
+                        )
                     }
                 }
         }
@@ -201,7 +208,10 @@ constructor(
                 bgScope.launch {
                     delay(screenTimeout.milliseconds)
                     if (isDreaming) {
-                        communalSceneInteractor.changeScene(CommunalScenes.Blank)
+                        communalSceneInteractor.changeScene(
+                            newScene = CommunalScenes.Blank,
+                            loggingReason = "hub timeout",
+                        )
                     }
                     timeoutJob = null
                 }
diff --git a/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalInteractor.kt b/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalInteractor.kt
index 99bcc12da576..7181b15138b9 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalInteractor.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalInteractor.kt
@@ -329,8 +329,11 @@ constructor(
     @Deprecated(
         "Use com.android.systemui.communal.domain.interactor.CommunalSceneInteractor instead"
     )
-    fun changeScene(newScene: SceneKey, transitionKey: TransitionKey? = null) =
-        communalSceneInteractor.changeScene(newScene, transitionKey)
+    fun changeScene(
+        newScene: SceneKey,
+        loggingReason: String,
+        transitionKey: TransitionKey? = null
+    ) = communalSceneInteractor.changeScene(newScene, loggingReason, transitionKey)
 
     fun setEditModeOpen(isOpen: Boolean) {
         _editModeOpen.value = isOpen
diff --git a/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractor.kt b/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractor.kt
index e45a69599a68..a0b996675331 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractor.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractor.kt
@@ -22,6 +22,7 @@ import com.android.compose.animation.scene.SceneKey
 import com.android.compose.animation.scene.TransitionKey
 import com.android.systemui.communal.data.repository.CommunalSceneRepository
 import com.android.systemui.communal.domain.model.CommunalTransitionProgressModel
+import com.android.systemui.communal.shared.log.CommunalSceneLogger
 import com.android.systemui.communal.shared.model.CommunalScenes
 import com.android.systemui.communal.shared.model.CommunalTransitionKeys
 import com.android.systemui.communal.shared.model.EditModeState
@@ -29,6 +30,7 @@ import com.android.systemui.dagger.SysUISingleton
 import com.android.systemui.dagger.qualifiers.Application
 import com.android.systemui.keyguard.shared.model.KeyguardState
 import com.android.systemui.util.kotlin.BooleanFlowOperators.allOf
+import com.android.systemui.util.kotlin.pairwiseBy
 import javax.inject.Inject
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -42,8 +44,8 @@ import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.flow.stateIn
-import kotlinx.coroutines.launch
 
 @OptIn(ExperimentalCoroutinesApi::class)
 @SysUISingleton
@@ -51,7 +53,8 @@ class CommunalSceneInteractor
 @Inject
 constructor(
     @Application private val applicationScope: CoroutineScope,
-    private val communalSceneRepository: CommunalSceneRepository,
+    private val repository: CommunalSceneRepository,
+    private val logger: CommunalSceneLogger,
 ) {
     private val _isLaunchingWidget = MutableStateFlow(false)
 
@@ -80,25 +83,39 @@ constructor(
      */
     fun changeScene(
         newScene: SceneKey,
+        loggingReason: String,
         transitionKey: TransitionKey? = null,
         keyguardState: KeyguardState? = null,
     ) {
-        applicationScope.launch {
+        applicationScope.launch("$TAG#changeScene") {
+            logger.logSceneChangeRequested(
+                from = currentScene.value,
+                to = newScene,
+                reason = loggingReason,
+                isInstant = false,
+            )
             notifyListeners(newScene, keyguardState)
-            communalSceneRepository.changeScene(newScene, transitionKey)
+            repository.changeScene(newScene, transitionKey)
         }
     }
 
     /** Immediately snaps to the new scene. */
     fun snapToScene(
         newScene: SceneKey,
+        loggingReason: String,
         delayMillis: Long = 0,
         keyguardState: KeyguardState? = null
     ) {
         applicationScope.launch("$TAG#snapToScene") {
             delay(delayMillis)
+            logger.logSceneChangeRequested(
+                from = currentScene.value,
+                to = newScene,
+                reason = loggingReason,
+                isInstant = true,
+            )
             notifyListeners(newScene, keyguardState)
-            communalSceneRepository.snapToScene(newScene)
+            repository.snapToScene(newScene)
         }
     }
 
@@ -113,13 +130,30 @@ constructor(
         if (_editModeState.value == EditModeState.STARTING) {
             return
         }
-        changeScene(CommunalScenes.Blank, CommunalTransitionKeys.SimpleFade)
+        changeScene(
+            CommunalScenes.Blank,
+            "activity start dismissing keyguard",
+            CommunalTransitionKeys.SimpleFade,
+        )
     }
 
     /**
      * Target scene as requested by the underlying [SceneTransitionLayout] or through [changeScene].
      */
-    val currentScene: Flow<SceneKey> = communalSceneRepository.currentScene
+    val currentScene: StateFlow<SceneKey> =
+        repository.currentScene
+            .pairwiseBy(initialValue = repository.currentScene.value) { from, to ->
+                logger.logSceneChangeCommitted(
+                    from = from,
+                    to = to,
+                )
+                to
+            }
+            .stateIn(
+                scope = applicationScope,
+                started = SharingStarted.Eagerly,
+                initialValue = repository.currentScene.value,
+            )
 
     private val _editModeState = MutableStateFlow<EditModeState?>(null)
     /**
@@ -134,7 +168,13 @@ constructor(
 
     /** Transition state of the hub mode. */
     val transitionState: StateFlow<ObservableTransitionState> =
-        communalSceneRepository.transitionState
+        repository.transitionState
+            .onEach { logger.logSceneTransition(it) }
+            .stateIn(
+                scope = applicationScope,
+                started = SharingStarted.Eagerly,
+                initialValue = repository.transitionState.value,
+            )
 
     /**
      * Updates the transition state of the hub [SceneTransitionLayout].
@@ -142,7 +182,7 @@ constructor(
      * Note that you must call is with `null` when the UI is done or risk a memory leak.
      */
     fun setTransitionState(transitionState: Flow<ObservableTransitionState>?) {
-        communalSceneRepository.setTransitionState(transitionState)
+        repository.setTransitionState(transitionState)
     }
 
     /** Returns a flow that tracks the progress of transitions to the given scene from 0-1. */
diff --git a/packages/SystemUI/src/com/android/systemui/communal/shared/log/CommunalSceneLogger.kt b/packages/SystemUI/src/com/android/systemui/communal/shared/log/CommunalSceneLogger.kt
new file mode 100644
index 000000000000..aed92156cfc3
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/communal/shared/log/CommunalSceneLogger.kt
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.communal.shared.log
+
+import com.android.compose.animation.scene.ObservableTransitionState
+import com.android.compose.animation.scene.SceneKey
+import com.android.systemui.log.LogBuffer
+import com.android.systemui.log.core.LogLevel
+import com.android.systemui.log.dagger.CommunalLog
+import javax.inject.Inject
+
+class CommunalSceneLogger @Inject constructor(@CommunalLog private val logBuffer: LogBuffer) {
+
+    fun logSceneChangeRequested(
+        from: SceneKey,
+        to: SceneKey,
+        reason: String,
+        isInstant: Boolean,
+    ) {
+        logBuffer.log(
+            tag = TAG,
+            level = LogLevel.INFO,
+            messageInitializer = {
+                str1 = from.toString()
+                str2 = to.toString()
+                str3 = reason
+                bool1 = isInstant
+            },
+            messagePrinter = {
+                buildString {
+                    append("Scene change requested: $str1 → $str2")
+                    if (isInstant) {
+                        append(" (instant)")
+                    }
+                    append(", reason: $str3")
+                }
+            },
+        )
+    }
+
+    fun logSceneChangeCommitted(
+        from: SceneKey,
+        to: SceneKey,
+    ) {
+        logBuffer.log(
+            tag = TAG,
+            level = LogLevel.INFO,
+            messageInitializer = {
+                str1 = from.toString()
+                str2 = to.toString()
+            },
+            messagePrinter = { "Scene change committed: $str1 → $str2" },
+        )
+    }
+
+    fun logSceneTransition(transitionState: ObservableTransitionState) {
+        when (transitionState) {
+            is ObservableTransitionState.Transition -> {
+                logBuffer.log(
+                    tag = TAG,
+                    level = LogLevel.INFO,
+                    messageInitializer = {
+                        str1 = transitionState.fromScene.toString()
+                        str2 = transitionState.toScene.toString()
+                    },
+                    messagePrinter = { "Scene transition started: $str1 → $str2" },
+                )
+            }
+            is ObservableTransitionState.Idle -> {
+                logBuffer.log(
+                    tag = TAG,
+                    level = LogLevel.INFO,
+                    messageInitializer = { str1 = transitionState.currentScene.toString() },
+                    messagePrinter = { "Scene transition idle on: $str1" },
+                )
+            }
+        }
+    }
+
+    companion object {
+        private const val TAG = "CommunalSceneLogger"
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/BaseCommunalViewModel.kt b/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/BaseCommunalViewModel.kt
index d1a5a4b8641f..b8221332eadf 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/BaseCommunalViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/BaseCommunalViewModel.kt
@@ -106,10 +106,11 @@ abstract class BaseCommunalViewModel(
      */
     fun changeScene(
         scene: SceneKey,
+        loggingReason: String,
         transitionKey: TransitionKey? = null,
         keyguardState: KeyguardState? = null
     ) {
-        communalSceneInteractor.changeScene(scene, transitionKey, keyguardState)
+        communalSceneInteractor.changeScene(scene, loggingReason, transitionKey, keyguardState)
     }
 
     fun setEditModeState(state: EditModeState?) = communalSceneInteractor.setEditModeState(state)
diff --git a/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalTransitionViewModel.kt b/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalTransitionViewModel.kt
index bbd8596a76bd..623937305921 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalTransitionViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalTransitionViewModel.kt
@@ -67,7 +67,10 @@ constructor(
      * transition.
      */
     fun snapToCommunal() {
-        communalSceneInteractor.snapToScene(CommunalScenes.Communal)
+        communalSceneInteractor.snapToScene(
+            newScene = CommunalScenes.Communal,
+            loggingReason = "transition view model",
+        )
     }
 
     // Show UMO on glanceable hub immediately on transition into glanceable hub
diff --git a/packages/SystemUI/src/com/android/systemui/communal/widgets/CommunalTransitionAnimatorController.kt b/packages/SystemUI/src/com/android/systemui/communal/widgets/CommunalTransitionAnimatorController.kt
index 08444623f24d..e7cedc61610f 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/widgets/CommunalTransitionAnimatorController.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/widgets/CommunalTransitionAnimatorController.kt
@@ -42,6 +42,7 @@ class CommunalTransitionAnimatorController(
         // TODO(b/330672236): move this to onTransitionAnimationEnd() without the delay.
         communalSceneInteractor.snapToScene(
             CommunalScenes.Blank,
+            "CommunalTransitionAnimatorController",
             ActivityTransitionAnimator.TIMINGS.totalDuration
         )
     }
diff --git a/packages/SystemUI/src/com/android/systemui/communal/widgets/EditWidgetsActivity.kt b/packages/SystemUI/src/com/android/systemui/communal/widgets/EditWidgetsActivity.kt
index 668fef6130bb..6d7cdc472f0a 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/widgets/EditWidgetsActivity.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/widgets/EditWidgetsActivity.kt
@@ -218,9 +218,10 @@ constructor(
         lifecycleScope.launch {
             communalViewModel.canShowEditMode.collect {
                 communalViewModel.changeScene(
-                    CommunalScenes.Blank,
-                    CommunalTransitionKeys.ToEditMode,
-                    KeyguardState.GONE,
+                    scene = CommunalScenes.Blank,
+                    loggingReason = "edit mode opening",
+                    transitionKey = CommunalTransitionKeys.ToEditMode,
+                    keyguardState = KeyguardState.GONE,
                 )
                 // wait till transitioned to Blank scene, then animate in communal content in
                 // edit mode
@@ -252,8 +253,9 @@ constructor(
             communalViewModel.cleanupEditModeState()
 
             communalViewModel.changeScene(
-                CommunalScenes.Communal,
-                CommunalTransitionKeys.FromEditMode
+                scene = CommunalScenes.Communal,
+                loggingReason = "edit mode closing",
+                transitionKey = CommunalTransitionKeys.FromEditMode
             )
 
             // Wait for the current scene to be idle on communal.
diff --git a/packages/SystemUI/src/com/android/systemui/dreams/DreamOverlayService.java b/packages/SystemUI/src/com/android/systemui/dreams/DreamOverlayService.java
index 4b9e5a024393..0c1fb72cc581 100644
--- a/packages/SystemUI/src/com/android/systemui/dreams/DreamOverlayService.java
+++ b/packages/SystemUI/src/com/android/systemui/dreams/DreamOverlayService.java
@@ -442,7 +442,9 @@ public class DreamOverlayService extends android.service.dreams.DreamOverlayServ
     @Override
     public void onWakeRequested() {
         mUiEventLogger.log(CommunalUiEvent.DREAM_TO_COMMUNAL_HUB_DREAM_AWAKE_START);
-        mCommunalInteractor.changeScene(CommunalScenes.Communal, null);
+        mCommunalInteractor.changeScene(CommunalScenes.Communal,
+                "dream wake requested",
+                null);
     }
 
     private Lifecycle.State getLifecycleStateLocked() {
@@ -493,7 +495,7 @@ public class DreamOverlayService extends android.service.dreams.DreamOverlayServ
         mSystemDialogsCloser.closeSystemDialogs();
 
         // Hide glanceable hub (this is a nop if glanceable hub is not open).
-        mCommunalInteractor.changeScene(CommunalScenes.Blank, null);
+        mCommunalInteractor.changeScene(CommunalScenes.Blank, "dream come to front", null);
     }
 
     /**
diff --git a/packages/SystemUI/src/com/android/systemui/dreams/ui/viewmodel/DreamViewModel.kt b/packages/SystemUI/src/com/android/systemui/dreams/ui/viewmodel/DreamViewModel.kt
index 4b07f78eb825..c9ecc97e0f96 100644
--- a/packages/SystemUI/src/com/android/systemui/dreams/ui/viewmodel/DreamViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/dreams/ui/viewmodel/DreamViewModel.kt
@@ -62,7 +62,7 @@ constructor(
             communalInteractor.isCommunalEnabled.value &&
                 !keyguardUpdateMonitor.isEncryptedOrLockdown(userTracker.userId)
         if (showGlanceableHub && !glanceableHubAllowKeyguardWhenDreaming()) {
-            communalInteractor.changeScene(CommunalScenes.Communal)
+            communalInteractor.changeScene(CommunalScenes.Communal, "transition away from dream")
         } else {
             toLockscreenTransitionViewModel.startTransition()
         }
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromDozingTransitionInteractor.kt b/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromDozingTransitionInteractor.kt
index 61446c19605c..9378d5087b14 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromDozingTransitionInteractor.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromDozingTransitionInteractor.kt
@@ -285,9 +285,10 @@ constructor(
     private suspend fun transitionToGlanceableHub() {
         if (communalSceneKtfRefactor()) {
             communalSceneInteractor.changeScene(
-                CommunalScenes.Communal,
+                newScene = CommunalScenes.Communal,
+                loggingReason = "from dozing to hub",
                 // Immediately show the hub when transitioning from dozing to hub.
-                CommunalTransitionKeys.Immediately,
+                transitionKey = CommunalTransitionKeys.Immediately,
             )
         } else {
             startTransitionTo(KeyguardState.GLANCEABLE_HUB)
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromGlanceableHubTransitionInteractor.kt b/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromGlanceableHubTransitionInteractor.kt
index befcc9e6c8ee..c9db26dca9e2 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromGlanceableHubTransitionInteractor.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromGlanceableHubTransitionInteractor.kt
@@ -159,6 +159,7 @@ constructor(
                     if (communalSceneKtfRefactor()) {
                         communalSceneInteractor.changeScene(
                             newScene = CommunalScenes.Blank,
+                            loggingReason = "hub to dozing",
                             transitionKey = CommunalTransitionKeys.Immediately,
                             keyguardState = KeyguardState.DOZING,
                         )
@@ -182,6 +183,7 @@ constructor(
                             if (communalSceneKtfRefactor()) {
                                 communalSceneInteractor.changeScene(
                                     newScene = CommunalScenes.Blank,
+                                    loggingReason = "hub to occluded (KeyguardWmStateRefactor)",
                                     transitionKey = CommunalTransitionKeys.SimpleFade,
                                     keyguardState = state,
                                 )
@@ -211,6 +213,7 @@ constructor(
                     .collect { _ ->
                         communalSceneInteractor.changeScene(
                             newScene = CommunalScenes.Blank,
+                            loggingReason = "hub to occluded",
                             transitionKey = CommunalTransitionKeys.SimpleFade,
                             keyguardState = KeyguardState.OCCLUDED,
                         )
@@ -254,6 +257,7 @@ constructor(
                         } else {
                             communalSceneInteractor.changeScene(
                                 newScene = CommunalScenes.Blank,
+                                loggingReason = "hub to gone",
                                 transitionKey = CommunalTransitionKeys.SimpleFade,
                                 keyguardState = KeyguardState.GONE
                             )
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromOccludedTransitionInteractor.kt b/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromOccludedTransitionInteractor.kt
index 905ca8eda87f..7b6949fdaa2c 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromOccludedTransitionInteractor.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromOccludedTransitionInteractor.kt
@@ -146,8 +146,9 @@ constructor(
             if (SceneContainerFlag.isEnabled) return
             if (communalSceneKtfRefactor()) {
                 communalSceneInteractor.changeScene(
-                    CommunalScenes.Communal,
-                    CommunalTransitionKeys.SimpleFade
+                    newScene = CommunalScenes.Communal,
+                    loggingReason = "occluded to hub",
+                    transitionKey = CommunalTransitionKeys.SimpleFade
                 )
             } else {
                 startTransitionTo(KeyguardState.GLANCEABLE_HUB)
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromPrimaryBouncerTransitionInteractor.kt b/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromPrimaryBouncerTransitionInteractor.kt
index 2823b93b4847..0118f8e21f79 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromPrimaryBouncerTransitionInteractor.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/FromPrimaryBouncerTransitionInteractor.kt
@@ -175,7 +175,10 @@ constructor(
                 !communalSceneInteractor.isLaunchingWidget.value &&
                 communalSceneInteractor.editModeState.value == null
         ) {
-            communalSceneInteractor.snapToScene(CommunalScenes.Blank)
+            communalSceneInteractor.snapToScene(
+                newScene = CommunalScenes.Blank,
+                loggingReason = "FromPrimaryBouncerTransitionInteractor",
+            )
         }
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/AccessibilityActionsViewModel.kt b/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/AccessibilityActionsViewModel.kt
index 34c1436c3235..38f5d3e76c7c 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/AccessibilityActionsViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/ui/viewmodel/AccessibilityActionsViewModel.kt
@@ -50,5 +50,9 @@ constructor(
             }
             .distinctUntilChanged()
 
-    fun openCommunalHub() = communalInteractor.changeScene(CommunalScenes.Communal)
+    fun openCommunalHub() =
+        communalInteractor.changeScene(
+            newScene = CommunalScenes.Communal,
+            loggingReason = "accessibility",
+        )
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/ActivityStarterInternalImpl.kt b/packages/SystemUI/src/com/android/systemui/statusbar/phone/ActivityStarterInternalImpl.kt
index 107bf1edb74f..d4ef42c687e5 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/ActivityStarterInternalImpl.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/ActivityStarterInternalImpl.kt
@@ -613,8 +613,9 @@ constructor(
                     super.onTransitionAnimationStart(isExpandingFullyAbove)
                     if (Flags.communalHub()) {
                         communalSceneInteractor.snapToScene(
-                            CommunalScenes.Blank,
-                            ActivityTransitionAnimator.TIMINGS.totalDuration
+                            newScene = CommunalScenes.Blank,
+                            loggingReason = "ActivityStarterInternalImpl",
+                            delayMillis = ActivityTransitionAnimator.TIMINGS.totalDuration
                         )
                     }
                 }
diff --git a/packages/SystemUI/tests/utils/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractorKosmos.kt b/packages/SystemUI/tests/utils/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractorKosmos.kt
index ee48c105a987..2ab82214e497 100644
--- a/packages/SystemUI/tests/utils/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractorKosmos.kt
+++ b/packages/SystemUI/tests/utils/src/com/android/systemui/communal/domain/interactor/CommunalSceneInteractorKosmos.kt
@@ -17,6 +17,7 @@
 package com.android.systemui.communal.domain.interactor
 
 import com.android.systemui.communal.data.repository.communalSceneRepository
+import com.android.systemui.communal.shared.log.communalSceneLogger
 import com.android.systemui.kosmos.Kosmos
 import com.android.systemui.kosmos.applicationCoroutineScope
 
@@ -24,6 +25,7 @@ val Kosmos.communalSceneInteractor: CommunalSceneInteractor by
     Kosmos.Fixture {
         CommunalSceneInteractor(
             applicationScope = applicationCoroutineScope,
-            communalSceneRepository = communalSceneRepository,
+            repository = communalSceneRepository,
+            logger = communalSceneLogger,
         )
     }
diff --git a/packages/SystemUI/tests/utils/src/com/android/systemui/communal/shared/log/CommunalSceneLoggerKosmos.kt b/packages/SystemUI/tests/utils/src/com/android/systemui/communal/shared/log/CommunalSceneLoggerKosmos.kt
new file mode 100644
index 000000000000..b560ee882929
--- /dev/null
+++ b/packages/SystemUI/tests/utils/src/com/android/systemui/communal/shared/log/CommunalSceneLoggerKosmos.kt
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.communal.shared.log
+
+import com.android.systemui.kosmos.Kosmos
+import com.android.systemui.log.logcatLogBuffer
+
+val Kosmos.communalSceneLogger: CommunalSceneLogger by
+    Kosmos.Fixture { CommunalSceneLogger(logcatLogBuffer("CommunalSceneLogger")) }