diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index fd3bb69..54e7c25 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -752,7 +752,7 @@
     bool isVirtualDisplay = (disp == HWC_DISPLAY_VIRTUAL);
     // If hotpluggable or virtual displays are inactive return error
     if ((hotPluggable || isVirtualDisplay) && !ctx->dpyAttr[disp].connected) {
-        ALOGE("%s display (%d) is inactive", __FUNCTION__, disp);
+        ALOGW("%s display (%d) is not connected anymore", __FUNCTION__, disp);
         return -EINVAL;
     }
 
diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index 38c0810..546a67b 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -216,8 +216,13 @@
         return false;
     }
 
-    if (mEngine == NULL || !(validateParams(ctx, list))) {
-        ALOGE("%s: Invalid Params", __FUNCTION__);
+    if (mEngine == NULL) {
+        ALOGW("%s: Copybit HAL not enabled", __FUNCTION__);
+        return false;
+    }
+
+    if (!(validateParams(ctx, list))) {
+        ALOGE("%s: validateParams() failed", __FUNCTION__);
         return false;
     }
     PtorInfo* ptorInfo = &(ctx->mPtorInfo);
diff --git a/libhwcomposer/hwc_uevents.cpp b/libhwcomposer/hwc_uevents.cpp
index d1c68a5..79d0302 100644
--- a/libhwcomposer/hwc_uevents.cpp
+++ b/libhwcomposer/hwc_uevents.cpp
@@ -121,8 +121,7 @@
             /* We need to send hotplug to SF only when we are disconnecting
              * HDMI as an external display. */
             if(dpy == HWC_DISPLAY_EXTERNAL) {
-                ALOGE_IF(UEVENT_DEBUG,"%s:Sending EXTERNAL OFFLINE hotplug"
-                        "event", __FUNCTION__);
+                ALOGI("%s: Sending EXTERNAL OFFLINE event", __FUNCTION__);
                 ctx->proc->hotplug(ctx->proc, dpy, EXTERNAL_OFFLINE);
             }
             break;
@@ -193,14 +192,13 @@
             ctx->mDrawLock.unlock();
 
             /* External display is HDMI */
-            ALOGE_IF(UEVENT_DEBUG, "%s: Sending EXTERNAL ONLINE"
-                    "hotplug event", __FUNCTION__);
+            ALOGI("%s: Sending EXTERNAL ONLINE event", __FUNCTION__);
             ctx->proc->hotplug(ctx->proc, dpy, EXTERNAL_ONLINE);
             break;
         }
     default:
         {
-            ALOGE("%s: Invalid state to swtich:%d", __FUNCTION__, switch_state);
+            ALOGE("%s: Invalid state to switch:%d", __FUNCTION__, switch_state);
             break;
         }
     }
diff --git a/liboverlay/overlayMdp.cpp b/liboverlay/overlayMdp.cpp
index 3932c4c..1290f32 100644
--- a/liboverlay/overlayMdp.cpp
+++ b/liboverlay/overlayMdp.cpp
@@ -374,8 +374,21 @@
     if(errVal) {
         /* No dump for failure due to insufficient resource */
         if(errVal != E2BIG) {
-            mdp_wrapper::dump("Bad ov dump: ",
-                *list.overlay_list[list.processed_overlays]);
+            //ENODEV is returned when the driver cannot satisfy a pipe request.
+            //This could happen if previous round's UNSET hasn't been commited
+            //yet, either because of a missed vsync or because of difference in
+            //vsyncs of primary and external. This is expected during
+            //transition scenarios, but should be considered fatal if seen
+            //continuously.
+            if(errVal == ENODEV) {
+                ALOGW("%s: Pipe unavailable. Likely previous UNSET pending. "
+                    "Fatal if seen continuously.", __FUNCTION__);
+            } else {
+                ALOGE("%s failed, error %d: %s", __FUNCTION__, errVal,
+                        strerror(errVal));
+                mdp_wrapper::dump("Bad ov dump: ",
+                        *list.overlay_list[list.processed_overlays]);
+            }
         }
         return false;
     }