diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/ProjectionSpace.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/ProjectionSpace.h
index a63145a..49013e0 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/ProjectionSpace.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/ProjectionSpace.h
@@ -120,16 +120,16 @@
 
 } // namespace compositionengine
 
-inline std::string to_string(const android::compositionengine::ProjectionSpace& space) {
-    return android::base::
-            StringPrintf("ProjectionSpace(bounds = %s, content = %s, orientation = %s)",
-                         to_string(space.getBoundsAsRect()).c_str(),
-                         to_string(space.getContent()).c_str(), toCString(space.getOrientation()));
+inline std::string to_string(const compositionengine::ProjectionSpace& space) {
+    return base::StringPrintf("ProjectionSpace{bounds=%s, content=%s, orientation=%s}",
+                              to_string(space.getBoundsAsRect()).c_str(),
+                              to_string(space.getContent()).c_str(),
+                              toCString(space.getOrientation()));
 }
 
 // Defining PrintTo helps with Google Tests.
-inline void PrintTo(const android::compositionengine::ProjectionSpace& space, ::std::ostream* os) {
+inline void PrintTo(const compositionengine::ProjectionSpace& space, std::ostream* os) {
     *os << to_string(space);
 }
 
-} // namespace android
\ No newline at end of file
+} // namespace android
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
index 5fa0d67..61be983 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
@@ -155,6 +155,8 @@
         SUCCESS = 1,
         // Composition strategy prediction failed for this frame.
         FAIL = 2,
+
+        ftl_last = FAIL
     };
 
     CompositionStrategyPredictionState strategyPrediction =
diff --git a/services/surfaceflinger/CompositionEngine/src/Display.cpp b/services/surfaceflinger/CompositionEngine/src/Display.cpp
index f545886..b79b46b 100644
--- a/services/surfaceflinger/CompositionEngine/src/Display.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Display.cpp
@@ -131,15 +131,11 @@
 }
 
 void Display::dump(std::string& out) const {
-    using android::base::StringAppendF;
+    const char* const type = isVirtual() ? "virtual" : "physical";
+    base::StringAppendF(&out, "Display %s (%s, \"%s\")", to_string(mId).c_str(), type,
+                        getName().c_str());
 
-    StringAppendF(&out, "   Composition Display State: [\"%s\"]", getName().c_str());
-
-    out.append("\n   ");
-    dumpVal(out, "isVirtual", isVirtual());
-    dumpVal(out, "DisplayId", to_string(mId));
-    out.append("\n");
-
+    out.append("\n   Composition Display State:\n");
     Output::dumpBase(out);
 }
 
diff --git a/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp b/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
index 01c368d..290c710 100644
--- a/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
@@ -89,7 +89,6 @@
 
 void dumpVal(std::string& out, const char* name, const ui::Transform& transform) {
     transform.dump(out, name);
-    out.append(" ");
 }
 
 void dumpVal(std::string& out, const char* name, const mat4& tr) {
@@ -99,7 +98,7 @@
                   "[%0.3f,%0.3f,%0.3f,%0.3f]"
                   "[%0.3f,%0.3f,%0.3f,%0.3f]"
                   "[%0.3f,%0.3f,%0.3f,%0.3f]"
-                  "[%0.3f,%0.3f,%0.3f,%0.3f]]",
+                  "[%0.3f,%0.3f,%0.3f,%0.3f]] ",
                   name,
                   tr[0][0], tr[1][0], tr[2][0], tr[3][0],
                   tr[0][1], tr[1][1], tr[2][1], tr[3][1],
@@ -109,9 +108,9 @@
 }
 
 void dumpVal(std::string& out, const char* name, const StretchEffect& effect) {
-    StringAppendF(&out, "%s={ width =%f, height = %f, vec=(%f, %f), max=(%f, %f) } ", name,
-                  effect.width, effect.height,
-                  effect.vectorX, effect.vectorY, effect.maxAmountX, effect.maxAmountY);
+    StringAppendF(&out, "%s={width=%f, height=%f, vec=(%f, %f), max=(%f, %f)} ", name, effect.width,
+                  effect.height, effect.vectorX, effect.vectorY, effect.maxAmountX,
+                  effect.maxAmountY);
 }
 
 } // namespace android::compositionengine::impl
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index e99b70f..c92c569 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -294,17 +294,15 @@
 }
 
 void Output::dump(std::string& out) const {
-    using android::base::StringAppendF;
-
-    StringAppendF(&out, "   Composition Output State: [\"%s\"]", mName.c_str());
-
-    out.append("\n   ");
+    base::StringAppendF(&out, "Output \"%s\"", mName.c_str());
+    out.append("\n   Composition Output State:\n");
 
     dumpBase(out);
 }
 
 void Output::dumpBase(std::string& out) const {
     dumpState(out);
+    out += '\n';
 
     if (mDisplayColorProfile) {
         mDisplayColorProfile->dump(out);
@@ -312,13 +310,15 @@
         out.append("    No display color profile!\n");
     }
 
+    out += '\n';
+
     if (mRenderSurface) {
         mRenderSurface->dump(out);
     } else {
         out.append("    No render surface!\n");
     }
 
-    android::base::StringAppendF(&out, "\n   %zu Layers\n", getOutputLayerCount());
+    base::StringAppendF(&out, "\n   %zu Layers\n", getOutputLayerCount());
     for (const auto* outputLayer : getOutputLayersOrderedByZ()) {
         if (!outputLayer) {
             continue;
@@ -329,7 +329,7 @@
 
 void Output::dumpPlannerInfo(const Vector<String16>& args, std::string& out) const {
     if (!mPlanner) {
-        base::StringAppendF(&out, "Planner is disabled\n");
+        out.append("Planner is disabled\n");
         return;
     }
     base::StringAppendF(&out, "Planner info for display [%s]\n", mName.c_str());
diff --git a/services/surfaceflinger/CompositionEngine/src/OutputCompositionState.cpp b/services/surfaceflinger/CompositionEngine/src/OutputCompositionState.cpp
index 7188281..3b85e3b 100644
--- a/services/surfaceflinger/CompositionEngine/src/OutputCompositionState.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/OutputCompositionState.cpp
@@ -14,40 +14,30 @@
  * limitations under the License.
  */
 
+#include <ftl/enum.h>
+
 #include <compositionengine/impl/DumpHelpers.h>
 #include <compositionengine/impl/OutputCompositionState.h>
 
 namespace android::compositionengine::impl {
-using CompositionStrategyPredictionState =
-        OutputCompositionState::CompositionStrategyPredictionState;
-
-std::string toString(CompositionStrategyPredictionState state) {
-    switch (state) {
-        case CompositionStrategyPredictionState::DISABLED:
-            return "Disabled";
-        case CompositionStrategyPredictionState::SUCCESS:
-            return "Success";
-        case CompositionStrategyPredictionState::FAIL:
-            return "Fail";
-    }
-}
 
 void OutputCompositionState::dump(std::string& out) const {
     out.append("   ");
     dumpVal(out, "isEnabled", isEnabled);
     dumpVal(out, "isSecure", isSecure);
-
-    dumpVal(out, "usesClientComposition", usesClientComposition);
     dumpVal(out, "usesDeviceComposition", usesDeviceComposition);
+
+    out.append("\n   ");
+    dumpVal(out, "usesClientComposition", usesClientComposition);
     dumpVal(out, "flipClientTarget", flipClientTarget);
     dumpVal(out, "reusedClientComposition", reusedClientComposition);
-    dumpVal(out, "layerFilter", layerFilter);
 
     out.append("\n   ");
-
+    dumpVal(out, "layerFilter", layerFilter);
+    out.append("\n   ");
     dumpVal(out, "transform", transform);
 
-    out.append("\n   ");
+    out.append("   "); // ui::Transform::dump appends EOL.
     dumpVal(out, "layerStackSpace", to_string(layerStackSpace));
     out.append("\n   ");
     dumpVal(out, "framebufferSpace", to_string(framebufferSpace));
@@ -59,19 +49,24 @@
     dumpVal(out, "needsFiltering", needsFiltering);
 
     out.append("\n   ");
-
     dumpVal(out, "colorMode", toString(colorMode), colorMode);
     dumpVal(out, "renderIntent", toString(renderIntent), renderIntent);
     dumpVal(out, "dataspace", toString(dataspace), dataspace);
+    dumpVal(out, "targetDataspace", toString(targetDataspace), targetDataspace);
+
+    out.append("\n   ");
     dumpVal(out, "colorTransformMatrix", colorTransformMatrix);
-    dumpVal(out, "target dataspace", toString(targetDataspace), targetDataspace);
+
+    out.append("\n   ");
     dumpVal(out, "displayBrightnessNits", displayBrightnessNits);
     dumpVal(out, "sdrWhitePointNits", sdrWhitePointNits);
     dumpVal(out, "clientTargetBrightness", clientTargetBrightness);
     dumpVal(out, "displayBrightness", displayBrightness);
-    dumpVal(out, "compositionStrategyPredictionState", toString(strategyPrediction));
 
-    out.append("\n");
+    out.append("\n   ");
+    dumpVal(out, "compositionStrategyPredictionState", ftl::enum_string(strategyPrediction));
+
+    out += '\n';
 }
 
 } // namespace android::compositionengine::impl
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index 65e7a7f..52529d6 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -24,7 +24,6 @@
 
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
-#include <android-base/stringprintf.h>
 #include <compositionengine/CompositionEngine.h>
 #include <compositionengine/Display.h>
 #include <compositionengine/DisplayColorProfile.h>
@@ -49,8 +48,6 @@
 
 namespace hal = hardware::graphics::composer::hal;
 
-using android::base::StringAppendF;
-
 ui::Transform::RotationFlags DisplayDevice::sPrimaryDisplayRotationFlags = ui::Transform::ROT_0;
 
 DisplayDeviceCreationArgs::DisplayDeviceCreationArgs(
@@ -342,38 +339,40 @@
 }
 
 std::string DisplayDevice::getDebugName() const {
-    const char* type = "virtual";
+    using namespace std::string_literals;
+
+    std::string name = "Display "s + to_string(getId()) + " ("s;
+
     if (mConnectionType) {
-        type = isInternal() ? "internal" : "external";
+        name += isInternal() ? "internal"s : "external"s;
+    } else {
+        name += "virtual"s;
     }
 
-    return base::StringPrintf("DisplayDevice{%s, %s%s, \"%s\"}", to_string(getId()).c_str(), type,
-                              isPrimary() ? ", primary" : "", mDisplayName.c_str());
+    if (isPrimary()) {
+        name += ", primary"s;
+    }
+
+    return name + ", \""s + mDisplayName + "\")"s;
 }
 
 void DisplayDevice::dump(std::string& result) const {
-    StringAppendF(&result, "+ %s\n", getDebugName().c_str());
-    StringAppendF(&result, "   powerMode=%s (%d)\n", to_string(mPowerMode).c_str(),
-                  static_cast<int32_t>(mPowerMode));
-    const auto activeMode = getActiveMode();
-    StringAppendF(&result, "   activeMode=%s\n",
-                  activeMode ? to_string(*activeMode).c_str() : "none");
+    using namespace std::string_literals;
 
-    result.append("   supportedModes=\n");
-    for (const auto& [id, mode] : mSupportedModes) {
-        result.append("      ");
-        result.append(to_string(*mode));
-        result.push_back('\n');
+    result += getDebugName();
+
+    if (!isVirtual()) {
+        result += "\n   deviceProductInfo="s;
+        if (mDeviceProductInfo) {
+            mDeviceProductInfo->dump(result);
+        } else {
+            result += "{}"s;
+        }
     }
 
-    StringAppendF(&result, "   deviceProductInfo=");
-    if (mDeviceProductInfo) {
-        mDeviceProductInfo->dump(result);
-    } else {
-        result.append("{}");
-    }
-    result.append("\n");
-    getCompositionDisplay()->dump(result);
+    result += "\n   powerMode="s;
+    result += to_string(mPowerMode);
+    result += '\n';
 
     if (mRefreshRateConfigs) {
         mRefreshRateConfigs->dump(result);
diff --git a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
index 8d685cf..eb14933 100644
--- a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
@@ -44,18 +44,10 @@
 #include "HWComposer.h"
 #include "../SurfaceFlinger.h"
 
-// ----------------------------------------------------------------------------
 namespace android {
-// ----------------------------------------------------------------------------
 
 using ui::Dataspace;
 
-/*
- * This implements the (main) framebuffer management. This class is used
- * mostly by SurfaceFlinger, but also by command line GL application.
- *
- */
-
 FramebufferSurface::FramebufferSurface(HWComposer& hwc, PhysicalDisplayId displayId,
                                        const sp<IGraphicBufferConsumer>& consumer,
                                        const ui::Size& size, const ui::Size& maxSize)
@@ -205,14 +197,14 @@
 
 void FramebufferSurface::dumpAsString(String8& result) const {
     Mutex::Autolock lock(mMutex);
-    result.appendFormat("  FramebufferSurface: dataspace: %s(%d)\n",
+    result.append("   FramebufferSurface\n");
+    result.appendFormat("      mDataSpace=%s (%d)\n",
                         dataspaceDetails(static_cast<android_dataspace>(mDataSpace)).c_str(),
                         mDataSpace);
-    ConsumerBase::dumpLocked(result, "   ");
+    ConsumerBase::dumpLocked(result, "      ");
 }
 
-void FramebufferSurface::dumpLocked(String8& result, const char* prefix) const
-{
+void FramebufferSurface::dumpLocked(String8& result, const char* prefix) const {
     ConsumerBase::dumpLocked(result, prefix);
 }
 
@@ -220,9 +212,7 @@
     return mCurrentFence;
 }
 
-// ----------------------------------------------------------------------------
-}; // namespace android
-// ----------------------------------------------------------------------------
+} // namespace android
 
 // TODO(b/129481165): remove the #pragma below and fix conversion issues
 #pragma clang diagnostic pop // ignored "-Wconversion"
diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp b/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
index 3226f22..ca83496 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
@@ -133,9 +133,9 @@
 } // namespace
 
 std::string RefreshRateConfigs::Policy::toString() const {
-    return base::StringPrintf("default mode ID: %d, allowGroupSwitching = %d"
-                              ", primary range: %s, app request range: %s",
-                              defaultMode.value(), allowGroupSwitching,
+    return base::StringPrintf("{defaultModeId=%d, allowGroupSwitching=%s"
+                              ", primaryRange=%s, appRequestRange=%s}",
+                              defaultMode.value(), allowGroupSwitching ? "true" : "false",
                               to_string(primaryRange).c_str(), to_string(appRequestRange).c_str());
 }
 
@@ -922,41 +922,46 @@
 }
 
 void RefreshRateConfigs::dump(std::string& result) const {
+    using namespace std::string_literals;
+
     std::lock_guard lock(mLock);
-    base::StringAppendF(&result, "DesiredDisplayModeSpecs (DisplayManager): %s\n\n",
-                        mDisplayManagerPolicy.toString().c_str());
-    scheduler::RefreshRateConfigs::Policy currentPolicy = *getCurrentPolicyLocked();
-    if (mOverridePolicy && currentPolicy != mDisplayManagerPolicy) {
-        base::StringAppendF(&result, "DesiredDisplayModeSpecs (Override): %s\n\n",
-                            currentPolicy.toString().c_str());
-    }
 
-    base::StringAppendF(&result, "Active mode: %s\n", to_string(*mActiveModeIt->second).c_str());
+    const auto activeModeId = mActiveModeIt->first;
+    result += "   activeModeId="s;
+    result += std::to_string(activeModeId.value());
 
-    result.append("Display modes:\n");
+    result += "\n   displayModes=\n"s;
     for (const auto& [id, mode] : mDisplayModes) {
-        result.push_back('\t');
-        result.append(to_string(*mode));
-        result.push_back('\n');
+        result += "      "s;
+        result += to_string(*mode);
+        result += '\n';
     }
 
-    base::StringAppendF(&result, "Supports Frame Rate Override By Content: %s\n",
-                        mSupportsFrameRateOverrideByContent ? "yes" : "no");
+    base::StringAppendF(&result, "   displayManagerPolicy=%s\n",
+                        mDisplayManagerPolicy.toString().c_str());
 
-    result.append("Idle timer: ");
-    if (const auto controller = mConfig.kernelIdleTimerController) {
-        base::StringAppendF(&result, "(kernel via %s) ", ftl::enum_string(*controller).c_str());
-    } else {
-        result.append("(platform) ");
+    if (const Policy& currentPolicy = *getCurrentPolicyLocked();
+        mOverridePolicy && currentPolicy != mDisplayManagerPolicy) {
+        base::StringAppendF(&result, "   overridePolicy=%s\n", currentPolicy.toString().c_str());
     }
 
+    base::StringAppendF(&result, "   supportsFrameRateOverrideByContent=%s\n",
+                        mSupportsFrameRateOverrideByContent ? "true" : "false");
+
+    result += "   idleTimer="s;
     if (mIdleTimer) {
-        result.append(mIdleTimer->dump());
+        result += mIdleTimer->dump();
     } else {
-        result.append("off");
+        result += "off"s;
     }
 
-    result.append("\n\n");
+    if (const auto controller = mConfig.kernelIdleTimerController) {
+        base::StringAppendF(&result, " (kernel via %s)", ftl::enum_string(*controller).c_str());
+    } else {
+        result += " (platform)"s;
+    }
+
+    result += '\n';
 }
 
 std::chrono::milliseconds RefreshRateConfigs::getIdleTimerTimeout() {
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index f33ea5b..2616203 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4941,7 +4941,9 @@
                       pid, uid);
     } else {
         static const std::unordered_map<std::string, Dumper> dumpers = {
+                {"--comp-displays"s, dumper(&SurfaceFlinger::dumpCompositionDisplays)},
                 {"--display-id"s, dumper(&SurfaceFlinger::dumpDisplayIdentificationData)},
+                {"--displays"s, dumper(&SurfaceFlinger::dumpDisplays)},
                 {"--dispsync"s, dumper([this](std::string& s) { mScheduler->dumpVsync(s); })},
                 {"--edid"s, argsDumper(&SurfaceFlinger::dumpRawDisplayIdentificationData)},
                 {"--frame-events"s, dumper(&SurfaceFlinger::dumpFrameEventsLocked)},
@@ -5118,6 +5120,20 @@
         [&] (Layer* layer) { layer->dumpFrameEvents(result); });
 }
 
+void SurfaceFlinger::dumpCompositionDisplays(std::string& result) const {
+    for (const auto& [token, display] : mDisplays) {
+        display->getCompositionDisplay()->dump(result);
+        result += '\n';
+    }
+}
+
+void SurfaceFlinger::dumpDisplays(std::string& result) const {
+    for (const auto& [token, display] : mDisplays) {
+        display->dump(result);
+        result += '\n';
+    }
+}
+
 void SurfaceFlinger::dumpDisplayIdentificationData(std::string& result) const {
     for (const auto& [token, display] : mDisplays) {
         const auto displayId = PhysicalDisplayId::tryCast(display->getId());
@@ -5326,21 +5342,12 @@
         });
     }
 
-    /*
-     * Dump Display state
-     */
-
     colorizer.bold(result);
     StringAppendF(&result, "Displays (%zu entries)\n", mDisplays.size());
     colorizer.reset(result);
-    for (const auto& [token, display] : mDisplays) {
-        display->dump(result);
-    }
-    result.append("\n");
-
-    /*
-     * Dump CompositionEngine state
-     */
+    dumpDisplays(result);
+    dumpCompositionDisplays(result);
+    result.push_back('\n');
 
     mCompositionEngine->dump(result);
 
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 6aa54ff..74e0407 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1094,9 +1094,13 @@
     void dumpStaticScreenStats(std::string& result) const;
     // Not const because each Layer needs to query Fences and cache timestamps.
     void dumpFrameEventsLocked(std::string& result);
+
+    void dumpCompositionDisplays(std::string& result) const REQUIRES(mStateLock);
+    void dumpDisplays(std::string& result) const REQUIRES(mStateLock);
     void dumpDisplayIdentificationData(std::string& result) const REQUIRES(mStateLock);
     void dumpRawDisplayIdentificationData(const DumpArgs&, std::string& result) const;
     void dumpWideColorInfo(std::string& result) const REQUIRES(mStateLock);
+
     LayersProto dumpDrawingStateProto(uint32_t traceFlags) const;
     void dumpOffscreenLayersProto(LayersProto& layersProto,
                                   uint32_t traceFlags = LayerTracing::TRACE_ALL) const;