>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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2049938 Title: Bang & Olufsen Cisco 980 loses connection on 6.5 generic kernel Status in linux package in Ubuntu: Triaged Bug description: When you connect the headset which is based on Bluetooth LE it connects and then almost immediately disconnects. This does not happen when using the 6.5.0-1009-oem kernel Can you poirt whatever changes to bluetooth from the oem kernel to the generic as the cutomer will not use the oem kernels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2049938/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
