--- a/dom/audiochannel/AudioChannelAgent.cpp
+++ b/dom/audiochannel/AudioChannelAgent.cpp
@@ -36,16 +36,19 @@ NS_INTERFACE_MAP_END
 NS_IMPL_CYCLE_COLLECTING_ADDREF(AudioChannelAgent)
 NS_IMPL_CYCLE_COLLECTING_RELEASE(AudioChannelAgent)
 
 AudioChannelAgent::AudioChannelAgent()
   : mAudioChannelType(AUDIO_AGENT_CHANNEL_ERROR)
   , mInnerWindowID(0)
   , mIsRegToService(false)
 {
+  // Init service in the begining, it can help us to know whether there is any
+  // created media component via AudioChannelService::IsServiceStarted().
+  RefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
 }
 
 AudioChannelAgent::~AudioChannelAgent()
 {
   Shutdown();
 }
 
 void

--- a/dom/audiochannel/AudioChannelService.cpp
+++ b/dom/audiochannel/AudioChannelService.cpp
@@ -196,16 +196,23 @@ AudioChannelService::CreateServiceIfNeed
 {
   MOZ_ASSERT(NS_IsMainThread());
 
   if (!gAudioChannelService) {
     gAudioChannelService = new AudioChannelService();
   }
 }
 
+/* static */ bool
+AudioChannelService::IsServiceStarted()
+{
+  // The service would start when the first AudioChannelAgent is created.
+  return !!gAudioChannelService;
+}
+
 /* static */ already_AddRefed<AudioChannelService>
 AudioChannelService::GetOrCreate()
 {
   if (sXPCOMShuttingDown) {
     return nullptr;
   }
 
   CreateServiceIfNeeded();

--- a/dom/audiochannel/AudioChannelService.h
+++ b/dom/audiochannel/AudioChannelService.h
@@ -95,16 +95,18 @@ public:
   static already_AddRefed<AudioChannelService> GetOrCreate();
 
   static bool IsAudioChannelMutedByDefault();
 
   static PRLogModuleInfo* GetAudioChannelLog();
 
   static bool IsEnableAudioCompeting();
 
+  static bool IsServiceStarted();
+
   /**
    * Any audio channel agent that starts playing should register itself to
    * this service, sharing the AudioChannel.
    */
   void RegisterAudioChannelAgent(AudioChannelAgent* aAgent,
                                  AudibleState aAudible);
 
   /**

--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -3,16 +3,17 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 /*
  * Base class for all our document implementations.
  */
 
+#include "AudioChannelService.h"
 #include "nsDocument.h"
 #include "nsIDocumentInlines.h"
 #include "mozilla/AnimationComparator.h"
 #include "mozilla/ArrayUtils.h"
 #include "mozilla/AutoRestore.h"
 #include "mozilla/BinarySearch.h"
 #include "mozilla/DebugOnly.h"
 #include "mozilla/EffectSet.h"
@@ -12074,17 +12075,18 @@ nsDocument::MaybeActiveMediaComponents()
     return;
   }
 
   if (!mWindow) {
     return;
   }
 
   mEverInForeground = true;
-  if (GetWindow()->GetMediaSuspend() == nsISuspendedTypes::SUSPENDED_BLOCK) {
+  if (GetWindow()->GetMediaSuspend() == nsISuspendedTypes::SUSPENDED_BLOCK &&
+      AudioChannelService::IsServiceStarted()) {
     GetWindow()->SetMediaSuspend(nsISuspendedTypes::NONE_SUSPENDED);
   }
 }
 
 NS_IMETHODIMP
 nsDocument::GetHidden(bool* aHidden)
 {
   *aHidden = Hidden();