From dmesg, I found your BT firmware is old one. [ 5.038223] Bluetooth: hci0: Firmware revision 0.4 build 126 week 5 2022
22.04.4 log: [ 528.128307] Bluetooth: hci0: Firmware revision 0.4 build 206 week 22 2023 After downgrade linux-firmware to:20220329.git681281e4-0ubuntu3.14 With the same BT fw, BT headphones works fine too. BT LE feature on this AX201 revision should be disabled in driver by default: [ 5.040245] Bluetooth: hci0: HCI LE Coded PHY feature bit is set, but its usage is not supported. ** Attachment added: "x1c9-6.5.0-18-generic-airpods-hd250bt-btfw126-dmesg.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2049938/+attachment/5751118/+files/x1c9-6.5.0-18-generic-airpods-hd250bt-btfw126-dmesg.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049938 Title: Bang & Olufsen Cisco 980 loses connection on 6.5 generic kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2049938/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
