Those are different profiles "ldac" and "sbc", so are actually different bugs to this. I suggest logging those as new bugs after 5.8.0 becomes the standard kernel in groovy (soon). If they are bugs at all (ie. you are sure your headphones support LDAC and SBC).
** Package changed: pulseaudio (Ubuntu) => linux (Ubuntu) ** No longer affects: bluez (Ubuntu) ** Tags added: a2dp -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1891648 Title: Cannot switch to A2DP profile w/o restarting bluetooth.service [pulseaudio: Refused to switch profile to a2dp_sink: Not connected] Status in linux package in Ubuntu: Incomplete Bug description: When connecting to any Bluetooth device, PulseAudio fails to change its profile to A2DP (and leaves it in HSP/HFP). The following is appended to /var/log/syslog when trying to change profile in pavucontrol: Aug 14 14:59:02 k-laptop pulseaudio[18882]: Refused to switch profile to a2dp_sink: Not connected I'm currently using patched pulseaudio-modules-bt from here: https://github.com/EHfive/pulseaudio-modules-bt. But the problem persists with both packages. The working workaround I found is: sudo systemctl restart bluetooth.service bluetoothctl # list device MACs devices # use a MAC from the list above connect <MAC> After doing this, it is possible to switch to A2DP profile in pavucontrol. But such restart is required each time device is connected. I'm using Kubuntu 20.10 (development branch) pulseaudio: 1:13.99.1-1ubuntu8 pulseaudio-modules-bluetooth: 1:13.99.1-1ubuntu8-9git+20200812~dfeee4f but also reproducible with 1:13.99.1-1ubuntu8 ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: pulseaudio 1:13.99.1-1ubuntu8 ProcVersionSignature: Ubuntu 5.4.0-43.47-generic 5.4.55 Uname: Linux 5.4.0-43-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu44 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: kyrboh 19544 F.... pulseaudio /dev/snd/pcmC0D0c: kyrboh 19544 F...m pulseaudio /dev/snd/pcmC0D0p: kyrboh 19544 F...m pulseaudio CasperMD5CheckResult: skip CurrentDesktop: KDE Date: Fri Aug 14 15:06:43 2020 InstallationDate: Installed on 2020-08-07 (6 days ago) InstallationMedia: Kubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) SourcePackage: pulseaudio UpgradeStatus: Upgraded to groovy on 2020-08-10 (3 days ago) dmi.bios.date: 05/22/2020 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.19.2 dmi.board.name: 05FFDN dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.19.2:bd05/22/2020:svnDellInc.:pnXPS159560:pvr:rvnDellInc.:rn05FFDN:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9560 dmi.product.sku: 07BE dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891648/+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