Hallo, on my two notebooks, one with Ubuntu (Mainline Kernel 6.9.3, bluez 5.7.2) and the other one with Manjaro (6.9.3, bluez 5.7.6) I'm having problems with my Sony WH-1000XM3 and Shure BT1. Either A2DP or HFP/HSP is not available after the connection has been established after a reboot or a reconnection. It's reproducible that with the WH-1000XM3 the A2DP profiles are missing and with the Shure BT1 HFP/HSP profiles are missing. It also takes longer than usual to connect and I have a log message in the journal: Jun 06 16:28:10 liebig bluetoothd[854]: profiles/audio/avdtp.c:cancel_request() Discover: Connection timed out (110) When I disable and re-enable bluetooth (while the Headsets are still on) and trigger a reconnect from the notebooks, A2DP and HFP/HSP Profiles are available again. I also tested it with 6.8.12 and it's the same problem. 6.8.11 and 6.9.2 don't have the problem. So I did a bisection. After reverting commit af1d425b6dc67cd67809f835dd7afb6be4d43e03 "Bluetooth: HCI: Remove HCI_AMP support" for 6.9.3 it's working again without problems. Let me know if you need anything from me. Best regards, Timo
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