The screenshot in comment #1 seems to show the headset is in A2DP mode. This means, per the original Bluetooth specification, it can only output and not input.
To enable input (microphone), you need to change the profile from A2DP to HSP/HFP. Although that makes the output quality low (bug 1838151), it's the only option that supports microphones at the moment. Please change the profile for the headset to HSP/HFP and then retest the microphone. ** Changed in: bluez (Ubuntu) Status: Confirmed => Incomplete ** 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 pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1872641 Title: Microphone doesn't work with Sony WH-CH700N bluetooth headphone Status in bluez package in Ubuntu: Incomplete Status in pulseaudio package in Ubuntu: Incomplete Bug description: I can choose the headphone as an input device, but it doesn't work. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: bluez 5.53-0ubuntu3 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu26 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Tue Apr 14 08:41:32 2020 InstallationDate: Installed on 2020-02-26 (47 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200225.4) InterestingModules: rfcomm bnep btusb bluetooth MachineType: To be filled by O.E.M. To be filled by O.E.M. ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=hu_HU.UTF-8 SHELL=/usr/bin/zsh ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic root=UUID=1dc32c86-d135-46fa-a68a-1cd7fcf4f31e ro quiet splash vt.handoff=7 SourcePackage: bluez UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/26/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2603 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: M5A97 R2.0 dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2603:bd06/26/2015:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A97R2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: To be filled by O.E.M. dmi.product.sku: SKU dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: To be filled by O.E.M. hciconfig: hci0: Type: Primary Bus: USB BD Address: 00:15:83:32:FA:A8 ACL MTU: 510:8 SCO MTU: 48:10 UP RUNNING RX bytes:156081 acl:67 sco:2629 events:2771 errors:0 TX bytes:1351383 acl:2903 sco:2625 commands:88 errors:0 rfkill: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1872641/+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