Hi! I had the same problem with JBL TUNE500BT Headphones on Ubuntu 20.04. I did a kernel update to 5.8.9-050809-generic version using ubuntu- mainline-kernel.sh script [1]. I also uninstalled ofono and ofono- phonesim which I installed earlier when trying to fix this problem and reverted any changes I did to the default.pa file. It seems to be working now, but audio quality is awful when using HSP/HFP, which is related to another bug [2]. I don't know if it's a good solution, but maybe it will help someone.
[1]: https://raw.githubusercontent.com/pimlie/ubuntu-mainline-kernel.sh/master/ubuntu-mainline-kernel.sh [2]: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1838151 -- 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/1576559 Title: Refused to switch profile to headset_head_unit: Not connected Status in PulseAudio: Unknown Status in pulseaudio package in Ubuntu: Confirmed Bug description: I'm trying to connect a bluetooth-speaker-with-microphone (Mi Bluetooth Speaker) to Ubuntu. It works well as an A2DP sync, but can't use it as a headset with microphone. The device doesn't list in the "Input Devices" by default, and using the sound settings to change the profile of the device to HSP/HFP results in this log message: W: [pulseaudio] module-bluez5-device.c: Refused to switch profile to headset_head_unit: Not connected I'm running Ubuntu 16.04 LTS. I did an upgrade from Ubuntu 15.10. pulseaudio: Installed: 1:8.0-0ubuntu3 bluez: Installed: 5.37-0ubuntu5 To manage notifications about this bug go to: https://bugs.launchpad.net/pulseaudio/+bug/1576559/+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
