I'm getting the same issue with my logitech H800 headset. Here's a more verbose pulseaudio log of the device connecting and attempting to switch profiles:
I: [pulseaudio] module-card-restore.c: Restored profile 'a2dp_sink' for card bluez_card.88_C6_26_31_DF_F0. I: [pulseaudio] module-card-restore.c: Restoring port latency offsets for card bluez_card.88_C6_26_31_DF_F0. I: [pulseaudio] card.c: Created 3 "bluez_card.88_C6_26_31_DF_F0" I: [pulseaudio] module-bluez5-device.c: Transport /org/bluez/hci0/dev_88_C6_26_31_DF_F0/fd2 acquired: fd 28 I: [pulseaudio] module-bluez5-device.c: SBC parameters: allocation=0, subbands=1, blocks=3, bitpool=53 I: [pulseaudio] sink.c: Created sink 1 "bluez_sink.88_C6_26_31_DF_F0" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right I: [pulseaudio] sink.c: bluetooth.protocol = "a2dp_sink" I: [pulseaudio] sink.c: device.description = "H800 Logitech Headset" I: [pulseaudio] sink.c: device.string = "88:C6:26:31:DF:F0" I: [pulseaudio] sink.c: device.api = "bluez" I: [pulseaudio] sink.c: device.class = "sound" I: [pulseaudio] sink.c: device.bus = "bluetooth" I: [pulseaudio] sink.c: device.form_factor = "headset" I: [pulseaudio] sink.c: bluez.path = "/org/bluez/hci0/dev_88_C6_26_31_DF_F0" I: [pulseaudio] sink.c: bluez.class = "0x240404" I: [pulseaudio] sink.c: bluez.alias = "H800 Logitech Headset" I: [pulseaudio] sink.c: device.icon_name = "audio-headset-bluetooth" I: [pulseaudio] sink.c: device.intended_roles = "phone" I: [pulseaudio] source.c: Created source 2 "bluez_sink.88_C6_26_31_DF_F0.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right I: [pulseaudio] source.c: device.description = "Monitor of H800 Logitech Headset" I: [pulseaudio] source.c: device.class = "monitor" I: [pulseaudio] source.c: device.string = "88:C6:26:31:DF:F0" I: [pulseaudio] source.c: device.api = "bluez" I: [pulseaudio] source.c: device.bus = "bluetooth" I: [pulseaudio] source.c: device.form_factor = "headset" I: [pulseaudio] source.c: bluez.path = "/org/bluez/hci0/dev_88_C6_26_31_DF_F0" I: [pulseaudio] source.c: bluez.class = "0x240404" I: [pulseaudio] source.c: bluez.alias = "H800 Logitech Headset" I: [pulseaudio] source.c: device.icon_name = "audio-headset-bluetooth" I: [pulseaudio] source.c: device.intended_roles = "phone" I: [bluetooth] core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5. I: [bluetooth] module-bluez5-device.c: Transport /org/bluez/hci0/dev_88_C6_26_31_DF_F0/fd2 resuming I: [pulseaudio] module.c: Loaded "module-bluez5-device" (index: #22; argument: "path=/org/bluez/hci0/dev_88_C6_26_31_DF_F0"). I: [pulseaudio] module-card-restore.c: Card bluez_card.88_C6_26_31_DF_F0 profile a2dp_sink became available, activating. I: [pulseaudio] module-suspend-on-idle.c: Sink bluez_sink.88_C6_26_31_DF_F0 idle for too long, suspending ... I: [bluetooth] bluez5-util.c: Transport /org/bluez/hci0/dev_88_C6_26_31_DF_F0/fd2 released I: [pulseaudio] module-card-restore.c: Card bluez_card.88_C6_26_31_DF_F0 profile a2dp_sink became available, activating. W: [pulseaudio] module-bluez5-device.c: Refused to switch profile to headset_head_unit: Not connected -- 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/1576559 Title: Refused to switch profile to headset_head_unit: Not connected 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/ubuntu/+source/pulseaudio/+bug/1576559/+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