Do you mean they don't appear in the audio device list at all, or they just don't get used even when they're selected from the list? Either way, bug 1866194 might be the answer and a fix for that should arrive in 20.04 in the coming weeks.
** Package changed: bluez (Ubuntu) => pulseaudio (Ubuntu) ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1893655 Title: Headphones connect but don't appear as audio output Status in pulseaudio package in Ubuntu: Incomplete Bug description: When I switch on my Sony WH-1000XM3 headphones, they reconnect to my laptop at Bluetooth level, but don't appear as an audio device. I have to remove them in the Ubuntu Bluetooth settings, and then re-pair them, every time. This is rather inconvenient. This started happening after upgrading to Ubuntu 20.04. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: bluez 5.53-0ubuntu3 ProcVersionSignature: Ubuntu 5.6.0-1021.21-oem 5.6.19 Uname: Linux 5.6.0-1021-oem x86_64 ApportVersion: 2.20.11-0ubuntu27.8 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: Unity:Unity7:ubuntu Date: Mon Aug 31 14:48:53 2020 InstallationDate: Installed on 2020-07-14 (48 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) InterestingModules: rfcomm bnep btusb bluetooth MachineType: LENOVO 20U9CTO1WW ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.6.0-1021-oem root=UUID=42d20f5a-04dd-4073-ac83-e07bd283a1d1 ro quiet splash vt.handoff=7 SourcePackage: bluez UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/01/2020 dmi.bios.vendor: LENOVO dmi.bios.version: N2WET19W (1.09 ) dmi.board.asset.tag: Not Available dmi.board.name: 20U9CTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0R32862 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN2WET19W(1.09):bd07/01/2020:svnLENOVO:pn20U9CTO1WW:pvrThinkPadX1CarbonGen8:rvnLENOVO:rn20U9CTO1WW:rvrSDK0R32862WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X1 Carbon Gen 8 dmi.product.name: 20U9CTO1WW dmi.product.sku: LENOVO_MT_20U9_BU_Think_FM_ThinkPad X1 Carbon Gen 8 dmi.product.version: ThinkPad X1 Carbon Gen 8 dmi.sys.vendor: LENOVO hciconfig: hci0: Type: Primary Bus: USB BD Address: F8:AC:65:6D:04:AB ACL MTU: 1021:4 SCO MTU: 96:6 UP RUNNING RX bytes:1274806 acl:246 sco:0 events:180845 errors:0 TX bytes:152114364 acl:177469 sco:0 commands:3182 errors:0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1893655/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp