Jonathan, We have made some changes to PulseAudio in Ubuntu 18.04 that might help you (because PulseAudio is what handles Bluetooth audio profiles). Please try live booting that to see if it has improved the situation:
http://cdimages.ubuntu.com/daily-live/current/ ** Changed in: bluez (Ubuntu) Status: Confirmed => Incomplete ** Tags added: a2dp ** Also affects: pulseaudio (Ubuntu) Importance: Undecided Status: New ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1735941 Title: no stereo on reconnect or by default for Sony 1000xm2 headphones Status in bluez package in Ubuntu: Incomplete Status in pulseaudio package in Ubuntu: Incomplete Bug description: Expectation: Bluetooth headphones attach with stereo sound on every connect. Issue: only stereo after manual switch of settings on first pair. Reconnect only has mono connection. Ubuntu 17.10 on a System76 Serval WS. Mono audio with the Sony 1000XM2 bluetooth headphones is the default on first pairing and is the only option after turning off the bluetooth or headphones. On a new pairing the default is HSP with mono audio. Manually I have to change to A2DP in the sound settings and I am able to have stereo sound. Disabling bluetooth or turning off the headphones followed by a connection will result in mono audio in HSP and switching to A2DP will also be mono. Temporary Workaround: remove the headphones from the paired devices and pair again as a new device to get access to stereo sound again. This procedure has to be repeated on every reconnect. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: bluez 5.46-0ubuntu3 ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8 Uname: Linux 4.13.0-17-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.7-0ubuntu3.5 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat Dec 2 14:54:12 2017 EcryptfsInUse: Yes InterestingModules: rfcomm bnep btusb bluetooth MachineType: System76, Inc. Serval WS ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-17-generic.efi.signed root=UUID=90a6c4ca-5b2a-461e-8792-18cd7e54a2fb ro quiet splash vt.handoff=7 SourcePackage: bluez UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/08/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1.05.10RSA dmi.board.asset.tag: Tag 12345 dmi.board.name: Serval WS dmi.board.vendor: System76, Inc. dmi.board.version: serw9 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: System76, Inc. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.05.10RSA:bd03/08/2016:svnSystem76,Inc.:pnServalWS:pvrserw9:rvnSystem76,Inc.:rnServalWS:rvrserw9:cvnSystem76,Inc.:ct10:cvrN/A: dmi.product.family: Not Applicable dmi.product.name: Serval WS dmi.product.version: serw9 dmi.sys.vendor: System76, Inc. hciconfig: hci0: Type: Primary Bus: USB BD Address: 44:85:00:36:47:F9 ACL MTU: 1021:4 SCO MTU: 96:6 UP RUNNING PSCAN INQUIRY RX bytes:18865088 acl:249 sco:362504 events:45487 errors:0 TX bytes:53430737 acl:40447 sco:362442 commands:2995 errors:9 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1735941/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
