Audio output problems?

This is what I see in Android logcat around the time that it happens. It looks like maybe something to do with OK Google hotword detection.

11-12 09:58:24.512 512 4175 I sound_trigger_hw: callback_thread_loop: Received SNDRV_LSM_EVENT_STATUS status=0 11-12 09:58:24.512 512 4175 D sound_trigger_hw: callback_thread_loop: params status 2 11-12 09:58:24.514 512 4175 I sound_trigger_hw: callback_thread_loop:[1] send recognition event 0 11-12 09:58:24.514 512 4175 E sound_trigger_hw: process_ftrt_capture_bytes: pcm read failed status -16 - cannot prepare channel: Device or resource busy 11-12 09:58:24.514 512 4175 D sound_trigger_hw: cpe_stop_buffering:[1] Enter pcm 0xf63ed0a0 11-12 09:58:24.518 914 914 I SoundTriggerHelper: Recognition success 11-12 09:58:24.519 3397 3412 I AlwaysOnHotwordDetector: onDetected 11-12 09:58:24.519 3397 3397 I GsaVoiceInteractionSrv: onHotwordDetected 11-12 09:58:24.539 512 4175 D sound_trigger_hw: cpe_stop_buffering:[1] Exit, status=0 11-12 09:58:24.539 512 4175 I sound_trigger_hw: callback_thread_loop: Waiting for SNDRV_LSM_EVENT_STATUS 11-12 09:58:24.554 1118 3766 I MicroRecognitionRnrImpl: Starting detection. 11-12 09:58:24.554 1118 3766 I MicrophoneInputStream: mic_starting com.google.android.apps.gsa.speech.audio.v@2ff4885 11-12 09:58:24.554 512 9122 D soundtrigger: audio_extn_sound_trigger_check_and_get_session: capture_handle 19 is sound trigger 11-12 09:58:24.555 512 3768 I AudioFlinger: AudioFlinger's thread 0xf1580000 ready to run 11-12 09:58:24.560 1118 1118 W ThreadPoolDumper: Queue length for executor AudioRouter with 1 threads is now 8. Perhaps some tasks are too long, or the pool is too small. 11-12 09:58:24.571 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.591 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.613 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.633 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.653 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.656 1118 3766 I MicrophoneInputStream: mic_started com.google.android.apps.gsa.speech.audio.v@2ff4885 11-12 09:58:24.675 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.695 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.716 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.737 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.757 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.778 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.798 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.819 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.839 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.860 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.881 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.901 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.921 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.942 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.962 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:24.983 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.003 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.023 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.044 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.064 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.085 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.105 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.125 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.146 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.167 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.187 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.208 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.228 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.248 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.269 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.289 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.310 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.330 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.351 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.371 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.392 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.412 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.433 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.453 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering 11-12 09:58:25.474 512 3768 E sound_trigger_hw: read_capture_bytes: No active buffering

/r/Nexus6P Thread