nRF5340 Audio DK: Audio Loosing sync both with I2S and U

[Nambiar]

Hi All,

       I have been using nRF5340 DK audio with toolchain Version 2.5.2 and using the Audio Demo (nrf5340_audio_dk_nrf5340_cpuapp_common) for gateway and headset (Broadcast source and Sink). I have not changed anything and used script to build and flash the binaries.

• The source and sink is able to manage sync only for ~10s in I2S case (Audio in at Source using I2S). 
• The source and sink is able to manage sync for ~ 1s in USB case.

This means audio plays for 10s/1s and then the sink is unable to get the audio afterwards.

As it is experimental SDK any suggestion to improve it or am I missing any configuration.

Regards

Sainath

[Nambiar]

         nRF5340 Audio nRF5340 Audio DK cpuapp                      
         NCS base version: 2.5.2                            
         Cmake run : Wed Feb 07 13:56:49 2024
HL [00:00:00.257,507] <inf> fw_info: ------- DEBUG BUILD -------
HL [00:00:00.257,507] <inf> fw_info: HEADSET left device
HL [00:00:00.268,127] <inf> board_version: Compatible board/HW version found: 1.0.0
HL [00:00:00.306,488] <inf> bt_mgmt_ctlr_cfg: Controller: LL_ACS_NRF53. Version: 3424
HL [00:00:00.308,471] <inf> bt_mgmt: Local identity addr: C5:D6:54:30:04:B0 (random)
HL [00:00:00.344,757] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:00.437,866] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:00.437,866] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:00.618,377] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:01.417,510] <inf> broadcast_sink: Syncing to broadcast stream index 0
HL [00:00:01.417,694] <inf> streamctrl_broadcast_sink: Presentation delay 10000 us is set
HL [00:00:02.217,803] <inf> broadcast_sink: Stream index 0 started
HL [00:00:02.217,803] <inf> broadcast_sink: Codec config for LC3:
HL [00:00:02.217,834] <inf> broadcast_sink:     Frequency: 48000 Hz
HL [00:00:02.217,834] <inf> broadcast_sink:     Frame Duration: 10000 us
HL [00:00:02.217,834] <inf> broadcast_sink:     Octets per frame: 120 (96000 kbps)
HL [00:00:02.217,834] <inf> broadcast_sink:     Frames per SDU: 1
HL [00:00:02.217,864] <inf> broadcast_sink:     Channel allocation: 0x1
HL [00:00:02.219,726] <wrn> le_audio_rx: Not in streaming state, throwing data: 1
HL [00:00:02.229,705] <inf> audio_datapath: Drft comp state: CALIB
HL [00:00:02.231,689] <wrn> audio_datapath: Data received, total underruns: 2
HL [00:00:02.242,675] <wrn> audio_datapath: Data received, total underruns: 3
HL [00:00:02.329,711] <inf> audio_datapath: Drft comp state: OFFSET
HL [00:00:02.930,145] <inf> audio_datapath: Drft comp state: LOCKED
HL [00:00:02.939,208] <inf> audio_datapath: Pres comp state: MEAS
HL [00:00:03.049,194] <inf> audio_datapath: Pres comp state: WAIT
HL [00:00:03.189,208] <inf> audio_datapath: Pres comp state: INIT
HL [00:00:03.199,218] <inf> audio_datapath: Pres comp state: MEAS
HL [00:00:03.309,234] <inf> audio_datapath: Pres comp state: LOCKED
HL [00:00:10.378,540] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:10.380,615] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:10.380,615] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:10.380,645] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:10.395,294] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:10.618,072] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:10.618,591] <inf> broadcast_sink: Stream stopped by user
HL [00:00:10.618,591] <inf> broadcast_sink: Stream index 0 stopped. Reason: 22
HL [00:00:10.618,927] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:10.621,002] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:10.621,032] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:10.621,032] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:10.624,145] <inf> audio_datapath: Pres comp state: INIT
HL [00:00:10.645,294] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:10.818,115] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:10.818,389] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:10.820,434] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:10.820,434] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:10.820,465] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:10.834,075] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:11.022,369] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:11.022,644] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:11.024,719] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:11.024,749] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:11.024,749] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:11.025,299] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:11.220,153] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:11.220,428] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:11.222,473] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:11.222,503] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:11.222,503] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:11.285,339] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:11.618,164] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:11.618,408] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:11.620,483] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:11.620,483] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:11.620,513] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:11.638,458] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:11.818,176] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:11.818,450] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:11.820,495] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:11.820,495] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:11.820,495] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:11.835,357] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:12.018,188] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:12.018,432] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:12.020,507] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:12.020,507] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:12.020,507] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:12.045,379] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:12.218,200] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:12.218,444] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:12.220,520] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:12.220,520] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:12.220,520] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:12.225,402] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:12.618,225] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:12.618,469] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:12.620,544] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:12.620,544] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:12.620,544] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:12.645,385] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:12.818,206] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:12.818,481] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:12.820,556] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:12.820,556] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:12.820,556] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:12.847,930] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:13.220,306] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:13.220,581] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:13.222,625] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:13.222,625] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:13.222,656] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:13.246,063] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:13.418,243] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:13.418,518] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:13.420,593] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:13.420,593] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:13.420,593] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:13.425,445] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:13.818,267] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:13.818,542] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:13.820,587] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:13.820,617] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:13.820,617] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:13.888,580] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:14.037,261] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:14.037,536] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:14.039,581] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:14.039,581] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:14.039,611] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:14.134,246] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:14.218,292] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:14.218,566] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:14.220,611] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:14.220,611] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:14.220,642] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:14.246,124] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:14.418,304] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:14.418,579] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:14.420,623] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:14.420,654] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:14.420,654] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:14.465,515] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:14.818,328] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:14.818,603] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:14.820,648] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:14.820,678] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:14.820,678] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:14.825,531] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:15.019,012] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:15.019,256] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:15.021,331] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:15.021,331] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:15.021,331] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:15.067,443] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:15.218,353] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:15.218,627] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:15.220,672] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:15.220,672] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:15.220,703] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:15.254,302] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:15.418,365] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:15.418,640] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:15.420,684] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:15.420,684] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:15.420,715] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:15.435,577] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:15.618,377] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:15.618,652] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:15.620,697] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:15.620,697] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:15.620,727] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:15.638,702] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:16.020,202] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:16.020,477] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:16.022,552] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:16.022,552] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:16.022,552] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:16.048,095] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:16.218,414] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:16.218,688] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:16.220,733] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:16.220,733] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:16.220,764] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:16.248,718] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:16.618,438] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:16.618,713] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:16.620,758] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:16.620,758] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:16.620,758] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:16.645,629] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:16.818,481] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:16.818,725] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:16.820,800] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:16.820,800] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:16.820,831] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:16.864,166] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:17.018,463] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.018,707] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.020,782] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:17.020,782] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.020,782] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.045,654] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:17.218,475] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.218,719] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.220,825] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:17.220,825] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.220,825] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.255,645] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:17.418,487] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.418,731] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.420,837] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:17.420,837] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.420,837] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.445,678] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:17.618,499] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.618,743] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.620,819] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:17.620,819] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.620,849] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.625,671] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:17.819,183] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.819,458] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.821,533] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:17.821,533] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.821,533] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.835,693] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:18.018,524] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:18.018,768] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:18.020,843] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:18.020,874] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:18.020,874] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:18.047,576] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:18.218,505] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:18.218,780] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:18.220,886] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:18.220,886] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:18.220,886] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:18.274,261] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689
HL [00:00:18.418,518] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:18.418,792] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:18.420,867] <inf> bt_mgmt_scan: Local addr: C5:D6:54:30:04:B0 (random). May time out. Updates not printed
HL [00:00:18.420,898] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:18.420,898] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:18.445,709] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x23a689

Logs for Sink

[Nambiar]

GW [00:00:00.256,286] <inf> fw_info: 
         nRF5340 Audio nRF5340 Audio DK cpuapp                      
         NCS base version: 2.5.2                            
         Cmake run : Fri Feb 09 15:53:18 2024
GW [00:00:00.256,286] <inf> fw_info: ------- DEBUG BUILD -------
GW [00:00:00.256,317] <inf> fw_info: Compiled for GATEWAY device
GW [00:00:00.266,937] <inf> board_version: Compatible board/HW version found: 1.0.0
GW [00:00:00.303,070] <inf> bt_mgmt_ctlr_cfg: Controller: LL_ACS_NRF53. Version: 3424
GW [00:00:00.304,321] <inf> bt_mgmt: Local identity addr: FA:52:F7:5D:AE:A8 (random)
GW [00:00:00.332,580] <inf> broadcast_source: Enabling broadcast_source NRF5340_BROADCASTER
GW [00:00:00.335,968] <inf> bt_mgmt_adv: Local addr: 3A:E4:AC:51:5C:3C (random)
GW [00:00:00.337,951] <inf> streamctrl_brcast_src: Ext adv ready
GW [00:00:00.338,531] <inf> bt_mgmt_adv: Advertising successfully started
GW [00:00:00.456,390] <inf> broadcast_source: Broadcast source 0x2000bc98 started
GW [00:00:00.456,665] <inf> broadcast_source: Broadcast source 0x2000bcbc started
GW [00:00:00.483,337] <inf> audio_datapath: Drft comp state: CALIB
GW [00:00:00.583,343] <inf> audio_datapath: Drft comp state: INIT
GW [00:00:00.584,350] <inf> audio_datapath: Drft comp state: CALIB
GW [00:00:00.684,356] <inf> audio_datapath: Drft comp state: OFFSET
GW [00:00:01.184,692] <inf> audio_datapath: Drft comp state: LOCKED

Link for source

[Nambiar]

I have updated the logs , kindly check below and let me know incase anyother details is required 

Logs Scenario : Audio over I2S on Source <-> Sink

[Nambiar]

Elfving : Any update , have attached the logs as requested.

[Elfving]

Great. Sorry about the delay from my side here, things are really busy these days.

So I heard that this can theoretically happen with the current Audio controller, as it prioritizes ISO over ACL. Though for it to be this bad your connection would really have to so suffering. Do you just have the two audio devices next to each other on a desk, or far away from each other? Is there anything close by that could interfere with the connection? If the DKs were wrapped in tin-foil it might explain this.

Regards,

Elfving