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04-24 20:07:59.777  1119  2046 D Debug Info: java.lang.Throwable
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.server.audio.FocusRequester.handleFocusLoss(FocusRequester.java:347)
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.server.audio.FocusRequester.handleExternalFocusGain(FocusRequester.java:308)
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.server.audio.MediaFocusControl.propagateFocusLossFromGain_syncAf(MediaFocusControl.java:295)
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.server.audio.MediaFocusControl.requestAudioFocus(MediaFocusControl.java:1511)
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.server.audio.AudioService.requestAudioFocus(AudioService.java:7145)
04-24 20:07:59.777  1119  2046 D Debug Info:     at android.media.AudioManager.requestAudioFocusForCall(AudioManager.java:3487)
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.server.telecom.CallAudioModeStateMachine$SimCallFocusState.enter(CallAudioModeStateMachine.java:482)
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.internal.util.StateMachine$SmHandler.invokeEnterMethods(StateMachine.java:1037)
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.internal.util.StateMachine$SmHandler.performTransitions(StateMachine.java:879)
04-24 20:07:59.777  1119  2046 D Debug Info:     at com.android.internal.util.StateMachine$SmHandler.handleMessage(StateMachine.java:819)