[BLU R1 HD Questions & Answers] Polar Nettles:
Just got a brand new Amazon version 8.4 with ads. I tried on 2 different BT speakers/receivers and get the same behavior. Issue isn't seen on an iPad or Nexus 5.

1. Turn on BT. Pairing happens almost immediately and audio starts playing on speaker.

2. About 10 seconds later there is a re-pairing - speaker beeps, audio player pauses or starts outputting from on-board speakers.

3. Five seconds later re-pairing happens again.

4. After this point everything is good.

Waiting 15 seconds before starting playback gets around the issue. But I am using this as a car MP3 player so a 15 second delay would be very annoying.

Has anyone else seen this? Unfortunately I don't have any other BT devices to test.

Edit 2: Correlating HCI log with Android log (pastebin.com /iuvjjqua). There is an exception in SearchServiceStarter shortly before the 1st disconnection but not the 2nd, so I don't know if it's related.

/********************* Android log ********************/

BT turned on

07-01 08:07:25.521 4760 4949 I BluetoothAdapterState: Bluetooth adapter state changed: 11-> 12

1st connection attempt

07-01 08:07:26.853 252 1147 I bt_a2dp_hw: adev_open_output_stream: opening output

1st disconnection

07-01 08:07:35.420 1730 1730 E SearchServiceStarter: Task 174 failed or timed out. Client 7610119383725888 disconnecting from SearchService!

07-01 08:07:35.453 4760 4760 I [Bluetooth.OPP]BluetoothOppReceiver: onReceive::action = android.bluetooth.adapter.action.STATE_CHANGED

07-01 08:07:35.516 4760 4760 I [Bluetooth.OPP]BluetoothOppReceiver: onReceive::action = android.bluetooth.adapter.action.STATE_CHANGED

07-01 08:07:36.259 4760 4953 I BluetoothA2dpServiceJni: bta2dp_connection_state_callback

07-01 08:07:36.337 4760 4960 W bt_avp : closing

2nd connection attempt

07-01 08:07:36.985 4760 4953 I BluetoothA2dpServiceJni: bta2dp_connection_state_callback

07-01 08:07:37.405 252 1147 I bt_a2dp_hw: adev_open_output_stream: opening output

2nd disconnection

07-01 08:07:41.693 4760 4953 I BluetoothA2dpServiceJni: bta2dp_connection_state_callback

07-01 08:07:41.740 4760 4960 W bt_avp : closing

3rd connection attempt

07-01 08:07:41.855 4760 4953 I BluetoothA2dpServiceJni: bta2dp_connection_state_callback

07-01 08:07:42.825 252 970 I bt_a2dp_hw: adev_open_output_stream: opening output

/********************* BT HCI log ********************/

1st connection attempt

243	08:07:26.468941	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Connection Request (AVDTP, SCID: 0x0041)

295	08:07:26.762535	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Connection Request (AVDTP, SCID: 0x0043)

307	08:07:28.606373	Hostlink_14:27:a6 (GT BT-Receiver 07)	BluProdu_86:0b:4b (R1 HD )	L2CAP	17	Rcvd Connection Request (AVCTP-Control, SCID: 0x5982)

1st disconnection

449	08:07:36.305140	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Disconnection Request (SCID: 0x0043, DCID: 0x5941, PSM: 0x0019, Service: Audio Source)

452	08:07:36.337501	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Disconnection Request (SCID: 0x0044, DCID: 0x5982, PSM: 0x0017, Service: AVCTP-Control)

453	08:07:36.339963	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Disconnection Request (SCID: 0x0041, DCID: 0x58c0, PSM: 0x0019, Service: Audio Source)

2nd connection attempt

479	08:07:36.596207	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Connection Request (AVDTP, SCID: 0x004b)

530	08:07:36.922487	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Connection Request (AVDTP, SCID: 0x004d)

542	08:07:38.721417	Hostlink_14:27:a6 (GT BT-Receiver 07)	BluProdu_86:0b:4b (R1 HD )	L2CAP	17	Rcvd Connection Request (AVCTP-Control, SCID: 0x5c02)

2nd disconnection

618	08:07:41.708125	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Disconnection Request (SCID: 0x004d, DCID: 0x5bc1, PSM: 0x0019, Service: Audio Sink)

621	08:07:41.740302	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Disconnection Request (SCID: 0x004e, DCID: 0x5c02, PSM: 0x0017, Service: AVCTP-Control)

622	08:07:41.741380	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Disconnection Request (SCID: 0x004b, DCID: 0x5b40, PSM: 0x0019, Service: Audio Sink)

3rd connection attempt

648	08:07:41.988464	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Connection Request (AVDTP, SCID: 0x0047)

700	08:07:42.349676	BluProdu_86:0b:4b (R1 HD )	Hostlink_14:27:a6 (GT BT-Receiver 07)	L2CAP	17	Sent Connection Request (AVDTP, SCID: 0x0048)

712	08:07:44.117149	Hostlink_14:27:a6 (GT BT-Receiver 07)	BluProdu_86:0b:4b (R1 HD )	L2CAP	17	Rcvd Connection Request (AVCTP-Control, SCID: 0x5e02)