NRF5340 LE AUDIO.Erroe Log: LOG_DBG("PA sync with broadcast source with ID 0x%06X lost", sink->broadcast_id);

[huniu]

Hi:

this is my old issue:

https://devzone.nordicsemi.com/f/nordic-q-a/97667/nrf5340-le-audio-stream-not-associated-with-an-ep

I creat a new case for more help.

[Sigurd]

Hi,

Could you add some more information about your application?

e.g., the setting for retransmission times, the bitrate, and also how many BIS are you working with?
And would there be a way to replicate this easily with our nRF5340-(Audio)-DK?

[Sigurd]

Please also provide logs from the headset side.

Since the terminology we used in here could lead to misunderstandings.

When you mentioned losing synchronization, would that be

1. The synchronization in audio_datapath module is not working correctly, cause the drift and presentation compensation keeps triggered and causing the bad user experience, or
2. The headset keeps lost sync from the periodic advertising. This could related with the missing packets from primary advertising channels

[huniu]

HI:

I'm sorry for the late response.

The probability of this problem occurring is very strange, sometimes it does not occur for several days, and sometimes it occurs multiple times within a few minutes:

The following is the log of headset:

*** Booting Zephyr OS build v3.2.99-ncs1 ***
HL [00:00:00.259,307] <dbg> fs_nvs: nvs_recover_last_ate: Recovering last ate from sector 0
HL [00:00:00.262,451] <inf> fs_nvs: 2 Sectors of 4096 bytes
HL [00:00:00.262,451] <inf> fs_nvs: alloc wra: 0, fc8
HL [00:00:00.262,481] <inf> fs_nvs: data wra: 0, 180
HL [00:00:00.262,756] <inf> fw_info:
         nRF5340 Audio nRF5340 Audio DK cpuapp
         NCS base version: 2.2.0
         Cmake run : Mon Mar 27 10:40:38 2023
HL [00:00:00.262,756] <inf> fw_info: ------- DEBUG BUILD -------
HL [00:00:00.262,786] <inf> fw_info: HEADSET left device
HL [00:00:00.274,322] <wrn> bt_hci_core: Controller to host flow control not supported
HL [00:00:00.402,923] <inf> ble: MAC: DC:0D:30:00:18:EE (random)
HL [00:00:00.403,137] <inf> ble: Controller version: 3310
HL [00:00:00.470,123] <inf> bis_headset: Scanning for broadcast sources
HL [00:00:01.337,829] <inf> bis_headset: Broadcast source FSC-BT631D found
HL [00:00:03.359,436] <inf> bis_headset: Codec config for LC3:
HL [00:00:03.359,466] <inf> bis_headset:        Frequency: 48000 Hz
HL [00:00:03.359,466] <inf> bis_headset:        Frame Duration: 10000 us
HL [00:00:03.359,466] <inf> bis_headset:        Octets per frame: 120 (96000 kbps)
HL [00:00:03.359,497] <inf> bis_headset:        Frames per SDU: 1
HL [00:00:03.359,497] <inf> bis_headset:        Channel allocation: 0x1
HL [00:00:03.359,497] <inf> bis_headset: Codec config for LC3:
HL [00:00:03.359,527] <inf> bis_headset:        Frequency: 48000 Hz
HL [00:00:03.359,527] <inf> bis_headset:        Frame Duration: 10000 us
HL [00:00:03.359,527] <inf> bis_headset:        Octets per frame: 120 (96000 kbps)
HL [00:00:03.359,527] <inf> bis_headset:        Frames per SDU: 1
HL [00:00:03.359,558] <inf> bis_headset:        Channel allocation: 0x1
HL [00:00:03.359,649] <inf> bis_headset: Syncing to broadcast stream index 0
HL [00:00:04.559,844] <inf> bis_headset: Stream index 0 started
HL [00:00:18.181,945] <inf> bis_headset: Stream index 0 stopped
HL [00:00:18.182,037] <dbg> audio_system: audio_system_stop: Stopping codec
HL [00:00:23.519,195] <inf> bis_headset: Restarting scanning for broadcast sources
HL [00:00:23.604,400] <inf> bis_headset: Broadcast source FSC-BT631D found
HL [00:00:26.006,378] <inf> bis_headset: Codec config for LC3:
HL [00:00:26.006,378] <inf> bis_headset:        Frequency: 48000 Hz
HL [00:00:26.006,378] <inf> bis_headset:        Frame Duration: 10000 us
HL [00:00:26.006,408] <inf> bis_headset:        Octets per frame: 120 (96000 kbps)
HL [00:00:26.006,408] <inf> bis_headset:        Frames per SDU: 1
HL [00:00:26.006,408] <inf> bis_headset:        Channel allocation: 0x1
HL [00:00:26.006,408] <inf> bis_headset: Codec config for LC3:
HL [00:00:26.006,439] <inf> bis_headset:        Frequency: 48000 Hz
HL [00:00:26.006,439] <inf> bis_headset:        Frame Duration: 10000 us
HL [00:00:26.006,439] <inf> bis_headset:        Octets per frame: 120 (96000 kbps)
HL [00:00:26.006,439] <inf> bis_headset:        Frames per SDU: 1
HL [00:00:26.006,469] <inf> bis_headset:        Channel allocation: 0x1
HL [00:00:26.006,561] <inf> bis_headset: Syncing to broadcast stream index 0
HL [00:00:27.206,817] <inf> bis_headset: Stream index 0 started
HL [00:27:49.681,304] <inf> bis_headset: Stream index 0 stopped
HL [00:27:49.681,335] <inf> bis_headset: Restarting scanning for broadcast sources
HL [00:27:49.682,586] <dbg> audio_system: audio_system_stop: Stopping codec
HL [00:27:50.248,992] <inf> bis_headset: Broadcast source FSC-BT631D found
HL [00:27:52.320,129] <inf> bis_headset: Codec config for LC3:
HL [00:27:52.320,159] <inf> bis_headset:        Frequency: 48000 Hz
HL [00:27:52.320,159] <inf> bis_headset:        Frame Duration: 10000 us
HL [00:27:52.320,159] <inf> bis_headset:        Octets per frame: 120 (96000 kbps)
HL [00:27:52.320,190] <inf> bis_headset:        Frames per SDU: 1
HL [00:27:52.320,190] <inf> bis_headset:        Channel allocation: 0x1
HL [00:27:52.320,190] <inf> bis_headset: Codec config for LC3:
HL [00:27:52.320,220] <inf> bis_headset:        Frequency: 48000 Hz
HL [00:27:52.320,220] <inf> bis_headset:        Frame Duration: 10000 us
HL [00:27:52.320,220] <inf> bis_headset:        Octets per frame: 120 (96000 kbps)
HL [00:27:52.320,220] <inf> bis_headset:        Frames per SDU: 1
HL [00:27:52.320,251] <inf> bis_headset:        Channel allocation: 0x1
HL [00:27:52.320,343] <inf> bis_headset: Syncing to broadcast stream index 0
HL [00:27:53.520,538] <inf> bis_headset: Stream index 0 started

Line 48 is the time when the problem occurred。

The following is the gateway log:

HL [00:05:45.933,044] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
*** Booting Zephyr OS build v3.2.99-ncs1 ***
HL [00:00:00.258,087] <dbg> fs_nvs: nvs_recover_last_ate: Recovering last ate from sector 0
HL [00:00:00.261,108] <inf> fs_nvs: 2 Sectors of 4096 bytes
HL [00:00:00.261,138] <inf> fs_nvs: alloc wra: 0, fb8
HL [00:00:00.261,138] <inf> fs_nvs: data wra: 0, 240
HL [00:00:00.261,413] <inf> fw_info:
         nRF5340 Audio nRF5340 Audio DK cpuapp
         NCS base version: 2.2.0
         Cmake run : Mon Mar 27 12:04:18 2023
HL [00:00:00.261,444] <inf> fw_info: ------- DEBUG BUILD -------
HL [00:00:00.261,444] <inf> fw_info: HEADSET left device
HL [00:00:00.273,040] <wrn> bt_hci_core: Controller to host flow control not supported
HL [00:00:00.401,550] <inf> ble: MAC: DC:0D:30:00:18:ED (random)
HL [00:00:00.401,733] <inf> ble: Controller version: 3310
HL [00:00:00.484,222] <inf> bis_gateway: Broadcast source 0x2000ab4c started
HL [00:00:00.484,497] <inf> bis_gateway: Broadcast source 0x2000ab70 started
HL [00:00:23.553,649] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:00:33.562,683] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:00:43.572,814] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:00:53.582,092] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:01:03.591,430] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:01:13.600,952] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:01:23.610,534] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:01:33.620,208] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:01:43.630,401] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:01:53.639,953] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:02:03.649,444] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:02:13.658,416] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:02:23.667,816] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:02:33.677,703] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:02:43.838,653] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:02:53.848,815] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:03:03.858,947] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:03:13.867,980] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:03:23.877,990] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:03:33.886,871] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:03:43.896,820] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:03:53.906,097] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:04:03.915,740] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:04:13.925,476] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:04:23.934,967] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:04:33.944,549] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:04:43.954,010] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:04:53.964,080] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:05:03.973,266] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:05:13.982,818] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:05:23.992,431] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:05:34.002,349] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:05:44.011,535] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:05:54.020,751] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:06:04.031,280] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:06:14.040,252] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:06:24.050,201] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:06:34.059,265] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:06:44.069,519] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:06:54.078,521] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:07:04.209,869] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:07:14.220,184] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:07:24.228,790] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:07:34.238,403] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:07:44.248,901] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:07:54.258,056] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:08:04.268,096] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:08:14.276,916] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:08:24.286,651] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:08:34.296,752] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:08:44.305,664] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:08:54.315,429] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:09:04.325,408] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:09:14.334,045] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:09:24.343,688] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:09:34.354,187] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:09:44.363,800] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:09:54.373,352] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:10:04.382,843] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:10:14.391,754] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:10:24.401,672] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:10:34.411,560] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:10:44.421,203] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:10:54.430,450] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:11:04.439,575] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:11:14.449,310] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:11:24.459,442] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:11:34.468,261] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:11:44.478,179] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:11:54.487,792] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:12:04.497,406] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:12:14.618,530] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:12:24.627,471] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:12:34.636,993] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:12:44.647,125] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:12:54.656,158] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:13:04.665,710] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:13:14.675,292] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:13:24.685,424] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:13:34.694,488] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:13:44.703,887] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:13:54.714,263] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:14:04.723,327] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:14:14.733,215] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:14:24.742,492] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:14:34.752,441] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:14:44.761,291] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:14:54.770,874] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:15:04.781,066] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:15:14.790,618] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:15:24.799,865] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:15:34.809,783] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:15:44.818,878] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:15:54.828,491] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:16:04.838,409] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:16:14.848,205] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:16:24.856,872] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:16:34.867,370] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:16:44.876,373] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:16:54.885,955] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:17:04.895,446] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:17:14.905,517] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:17:24.914,215] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:17:34.924,591] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:17:45.077,392] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:17:55.087,249] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:18:05.096,832] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:18:15.106,384] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:18:25.116,088] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:18:35.126,037] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:18:45.134,979] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:18:55.145,233] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:19:05.154,327] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:19:15.163,970] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:19:25.173,492] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:19:35.183,532] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:19:45.193,023] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:19:55.202,178] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:20:05.211,914] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:20:15.221,801] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:20:25.230,957] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:20:35.240,478] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:20:45.250,183] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:20:55.259,735] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:21:05.269,592] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:21:15.278,717] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:21:25.288,269] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:21:35.297,851] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:21:45.307,647] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:21:55.316,925] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:22:05.327,270] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:22:15.336,181] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:22:25.346,435] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:22:35.355,316] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:22:45.365,020] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:22:55.374,542] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:23:05.384,216] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:23:15.393,402] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:23:25.403,747] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:23:35.413,177] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:23:45.422,424] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:23:55.432,342] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:24:05.441,192] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:24:15.450,897] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:24:25.625,610] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:24:35.635,070] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:24:45.644,775] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:24:55.654,266] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:25:05.664,062] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:25:15.673,461] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:25:25.682,922] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:25:35.693,267] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:25:45.702,911] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:25:55.711,761] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:26:05.721,099] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:26:15.730,865] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:26:25.740,539] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:26:35.750,152] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:26:45.760,314] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:26:55.769,378] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:27:05.779,418] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:27:15.788,208] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:27:25.798,004] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:27:35.807,586] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:27:45.817,718] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:27:55.826,660] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:28:05.836,639] <dbg> audio_system: encoder_thread: RX alloced: 7, locked: 7
HL [00:28:15.845,886] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6
HL [00:28:25.855,163] <dbg> audio_system: encoder_thread: RX alloced: 6, locked: 6

1.I believe that this issue can be replicate with nRF5340-(Audio)-DK, but it is not easy because it cannot be reproduced stably. By synchronization loss, I mean between the headset and the gateway。

2.my project base on NCS 2.2.0,one headset+one gateway.i have't change any param such as:the setting for retransmission times, the bitrate and so on.

[Sigurd]

Hi,

1) Do you know if there is interference nearby the headset or gateway, like a WIFI router or some other devices which is using 2.4GHz?

2) It would be useful with the debug log level logs from le_audio_bis_headset.c , this can be achieve by set CONFIG_BLE_LOG_LEVEL_DBG=y, so we can know more about this "disconnection" procedure.

3) Also, if possible, could you test with NCS v2.3.0 as well, to see if there is any change in how this issue behaves?

[huniu]

1.I am not sure if there is interference, I focus on wireless product developmentt ,so there may be hundreds of Bluetooth and WiFi devices around me. Finding a relatively clean environment for testing is really worth trying, but it takes some time.

2. I will open this and retrieve more logs again.

3. It's worth trying, but it will take some time,  I'll respond when I'm ready.