diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 2da92b3..4d66c38 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4373,6 +4373,7 @@
                   mDebugDisplayConfigSetByBackdoor ? "yes" : "no");
 
     mScheduler->dump(mAppConnectionHandle, result);
+    mScheduler->getPrimaryDispSync().dump(result);
 }
 
 void SurfaceFlinger::dumpStaticScreenStats(std::string& result) const {