diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index 173f941..0df41ed 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -444,6 +444,63 @@
     }
 }
 
+TEST_F(SchedulerTest, onFrameSignalMultipleDisplays) {
+    mScheduler->registerDisplay(kDisplayId1,
+                                std::make_shared<RefreshRateSelector>(kDisplay1Modes,
+                                                                      kDisplay1Mode60->getId()));
+    mScheduler->registerDisplay(kDisplayId2,
+                                std::make_shared<RefreshRateSelector>(kDisplay2Modes,
+                                                                      kDisplay2Mode60->getId()));
+
+    using VsyncIds = std::vector<std::pair<PhysicalDisplayId, VsyncId>>;
+
+    struct Compositor final : ICompositor {
+        VsyncIds vsyncIds;
+        bool committed = true;
+
+        void configure() override {}
+
+        bool commit(PhysicalDisplayId, const scheduler::FrameTargets& targets) override {
+            vsyncIds.clear();
+
+            for (const auto& [id, target] : targets) {
+                vsyncIds.emplace_back(id, target->vsyncId());
+            }
+
+            return committed;
+        }
+
+        CompositeResultsPerDisplay composite(PhysicalDisplayId,
+                                             const scheduler::FrameTargeters&) override {
+            CompositeResultsPerDisplay results;
+
+            for (const auto& [id, _] : vsyncIds) {
+                results.try_emplace(id,
+                                    CompositeResult{.compositionCoverage =
+                                                            CompositionCoverage::Hwc});
+            }
+
+            return results;
+        }
+
+        void sample() override {}
+    } compositor;
+
+    mScheduler->doFrameSignal(compositor, VsyncId(42));
+
+    const auto makeVsyncIds = [](VsyncId vsyncId) -> VsyncIds {
+        return {{kDisplayId1, vsyncId}, {kDisplayId2, vsyncId}};
+    };
+
+    EXPECT_EQ(makeVsyncIds(VsyncId(42)), compositor.vsyncIds);
+
+    compositor.committed = false;
+    mScheduler->doFrameSignal(compositor, VsyncId(43));
+
+    // FrameTargets should be updated despite the skipped commit.
+    EXPECT_EQ(makeVsyncIds(VsyncId(43)), compositor.vsyncIds);
+}
+
 class AttachedChoreographerTest : public SchedulerTest {
 protected:
     void frameRateTestScenario(Fps layerFps, int8_t frameRateCompatibility, Fps displayFps,
diff --git a/services/surfaceflinger/tests/unittests/TestableScheduler.h b/services/surfaceflinger/tests/unittests/TestableScheduler.h
index 151b178..014d07c 100644
--- a/services/surfaceflinger/tests/unittests/TestableScheduler.h
+++ b/services/surfaceflinger/tests/unittests/TestableScheduler.h
@@ -59,6 +59,12 @@
     MOCK_METHOD(void, scheduleFrame, (), (override));
     MOCK_METHOD(void, postMessage, (sp<MessageHandler>&&), (override));
 
+    void doFrameSignal(ICompositor& compositor, VsyncId vsyncId) {
+        ftl::FakeGuard guard1(kMainThreadContext);
+        ftl::FakeGuard guard2(mDisplayLock);
+        Scheduler::onFrameSignal(compositor, vsyncId, TimePoint());
+    }
+
     // Used to inject mock event thread.
     ConnectionHandle createConnection(std::unique_ptr<EventThread> eventThread) {
         return Scheduler::createConnection(std::move(eventThread));