[Xiaomi Mi 6X] Bluetooth headset muted when calling (via Bluetooth HFP).

[suwakowww]

Hello,
this bug is similar to #136 .
Version: AOSP v22 and later, early versions are untested.
Base ROM： MIUI 8.7.26 (Dev)
When calling, it will be muted and speak from built-in speaker automatically, regardless of the speaker setting you used. Also, the mic of headset can't use, either.
But I can hear ringing tones from my headset when I have incoming calls.

Here is the questionable logs what I seems (from line 458 to line 476, but I'm not sure due to the log file is too big.):

09-05 18:08:18.088  2415  2415 I bt_stack: [INFO:avrcp_service.cc(342)] virtual void bluetooth::avrcp::AvrcpService::SendMediaUpdate(bool, bool, bool) track_changed=1 :  play_state=1 :  queue=1
09-05 18:08:18.088  2415  2927 W bt_stack: [WARNING:device.cc(1149)] Device is not registered for now playing updates
09-05 18:08:18.088  2415  2927 I bt_stack: [INFO:device.cc(1182)] 14:43:19:80:23:a6 : HandlePlayPosUpdate
09-05 18:08:18.088  2415  2927 W bt_stack: [WARNING:device.cc(1124)] Device is not registered for track changed updates
09-05 18:08:18.088  2415  2596 D NewAvrcpTargetJni: getCurrentPlayStatus
09-05 18:08:18.088  2415  2596 D NewAvrcpNativeInterface: getPlayStatus
09-05 18:08:18.090  2415  2596 D NewAvrcpTargetJni: getCurrentPlayStatus
09-05 18:08:18.090  2415  2596 D NewAvrcpNativeInterface: getPlayStatus
09-05 18:08:18.092  1403  1403 V GpsNetInitiatedHandler: ACTION_NEW_OUTGOING_CALL - false
09-05 18:08:18.094  1403  1403 I AudioService: setBluetoothScoOnInt: true setBluetoothScoOn(true) from u/pid:1000/1403
09-05 18:08:18.096  1403  1403 W AudioService: setBluetoothScoOnInt(true) failed because null is not in audio connected mode
09-05 18:08:18.097  1403  1403 I Telecom : BluetoothStateReceiver: Device 14:43:19:80:23:A6 transitioned to audio state 12: BSR.oR@Dbg
09-05 18:08:18.097  1403  2599 I Telecom : BluetoothRouteManager: Message received: HFP_IS_ON.: BSR.oR->BRM.pM_200@Dbg
09-05 18:08:18.098  1403  2599 W Telecom : BluetoothRouteManager: HFP audio unexpectedly turned on from device 14:43:19:80:23:A6: BSR.oR->BRM.pM_200@Dbg
09-05 18:08:18.098  1403  2615 I Telecom : CallAudioRouteStateMachine: Message received: BT_AUDIO_CONNECTED=1302, arg1=0: BSR.oR->BRM.pM_200->CARSM.pM_BT_AUDIO_CONNECTED@Dbg
09-05 18:08:18.098  1403  2615 I Telecom : QuiescentBluetoothRoute: Processing message BT_AUDIO_CONNECTED: BSR.oR->BRM.pM_200->CARSM.pM_BT_AUDIO_CONNECTED@Dbg
09-05 18:08:18.098  1403  2615 I Telecom : Event: RecordEntry TC@5: AUDIO_ROUTE, Leaving state QuiescentBluetoothRoute: BSR.oR->BRM.pM_200->CARSM.pM_BT_AUDIO_CONNECTED@Dbg
09-05 18:08:18.098  1403  2615 I Telecom : Event: RecordEntry TC@5: AUDIO_ROUTE, Entering state ActiveBluetoothRoute: BSR.oR->BRM.pM_200->CARSM.pM_BT_AUDIO_CONNECTED@Dbg
09-05 18:08:18.099  2415  2934 W Avrcp   : playState object null, sending STOPPED

Full logfile here (from dialing call to hanging up):
calling.log

[adityawibisana]

Hi, I am also having this issue. Basically, unable to record via BT headset. Happened only on Xiaomi Device though. Other phone, same app, no problem

[penn5]

Resolved in next release (probably)

[adityawibisana]

@penn5 : Actually it is Oreo problem. Samsung with Oreo, has this problem too. My workaround to record via BT headset is to play audio during recording. This somehow fix our problem. Older Android (< Oreo) does NOT have this problem

[penn5]

I know the issue isn't present before Oreo. But it's still there in pie.

[suwakowww]

Tested and confirmed on dipper with AOSP v117.
Thanks!