diff --git a/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp b/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
index 64a8ae7..17f6f31 100644
--- a/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
@@ -330,7 +330,11 @@
 
     t.join();
     close(pipefds[0]);
-    return str;
+
+    std::string hash;
+    mAidlComposer->getInterfaceHash(&hash);
+    return std::string(mAidlComposer->descriptor) +
+            " version:" + std::to_string(mComposerInterfaceVersion) + " hash:" + hash + str;
 }
 
 void AidlComposer::registerCallback(HWC2::ComposerCallback& callback) {
diff --git a/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp b/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
index c4ff9cc..12ab2c2 100644
--- a/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
@@ -291,6 +291,7 @@
 
 std::string HidlComposer::dumpDebugInfo() {
     std::string info;
+    info += std::string(mComposer->descriptor) + "\n";
     mComposer->dumpDebugInfo([&](const auto& tmpInfo) { info = tmpInfo.c_str(); });
 
     return info;