— a/frameworks/base/services/core/java/com/android/server/audio/AudioService.java
+++ b/frameworks/base/services/core/java/com/android/server/audio/AudioService.java
@@ -2391,7 +2391,7 @@ public class AudioService extends IAudioService.Stub
if (!shouldMute) {
// unmute
// ring and notifications volume should never be 0 when not silenced
-
if (mStreamVolumeAlias[streamType] == AudioSystem.STREAM_SYSTEM) {
-
if (mStreamVolumeAlias[streamType] == AudioSystem.STREAM_SYSTEM) { synchronized (VolumeStreamState.class) { final VolumeStreamState vss = mStreamStates[streamType]; for (int i = 0; i < vss.mIndexMap.size(); i++) {