Public bug reported:

Using Ubuntu Utopic:
kernel: 3.15.0-6-generic
hardware: Intel Corporation Centrino Advanced-N 6235

I'm able to successfully connect to any device, but can't enable the HSP
profile (Input/Output error). A2DP works fine though.

Tested with Jabra Halo (HSP and A2DP) and Motorola H375 (HSP).

pulseaudio:
Card #3
        Name: bluez_card.00_23_78_AB_89_AC
        Driver: module-bluetooth-device.c
        Owner Module: 21
        Properties:
                device.description = "Jabra Halo"
                device.string = "00:23:78:AB:89:AC"
                device.api = "bluez"
                device.class = "sound"
                device.bus = "bluetooth"
                device.form_factor = "headset"
                bluez.path = "/org/bluez/22500/hci0/dev_00_23_78_AB_89_AC"
                bluez.class = "0x240404"
                bluez.name = "Jabra Halo"
                device.icon_name = "audio-headset-bluetooth"
                device.intended_roles = "phone"
        Profiles:
                hsp: Telephony Duplex (HSP/HFP) (sinks: 1, sources: 1, 
priority. 20)
                a2dp: High Fidelity Playback (A2DP) (sinks: 1, sources: 0, 
priority. 10)
                off: Off (sinks: 0, sources: 0, priority. 0)
        Active Profile: off
        Ports:
                headset-output: Headset (priority: 0, latency offset: 0 usec)
                        Part of profile(s): hsp, a2dp
                headset-input: Headset (priority: 0, latency offset: 0 usec)
                        Part of profile(s): hsp

bluetoothd logs:

rsalveti@evasys:~$ pactl set-card-profile bluez_card.00_23_78_AB_89_AC hsp
Failure: Input/Output error

Jun 18 16:59:03 evasys bluetoothd[22500]: 
audio/transport.c:media_transport_acquire() Transport 
/org/bluez/22500/hci0/dev_00_23_78_AB_89_AC/fd0: read lock acquired
Jun 18 16:59:03 evasys bluetoothd[22500]: 
audio/transport.c:media_transport_acquire() Transport 
/org/bluez/22500/hci0/dev_00_23_78_AB_89_AC/fd0: write lock acquired
Jun 18 16:59:03 evasys bluetoothd[22500]: 
audio/transport.c:media_owner_create() Owner created: sender=:1.942 
accesstype=rw
Jun 18 16:59:03 evasys bluetoothd[22500]: audio/headset.c:headset_set_state() 
State changed /org/bluez/22500/hci0/dev_00_23_78_AB_89_AC: 
HEADSET_STATE_CONNECTED -> HEADSET_STATE_PLAY_IN_PROGRESS
Jun 18 16:59:03 evasys bluetoothd[22500]: audio/media.c:headset_state_changed() 
Jun 18 16:59:03 evasys bluetoothd[22500]: 
audio/transport.c:media_request_create() Request created: method=Acquire id=5
Jun 18 16:59:03 evasys bluetoothd[22500]: audio/transport.c:media_owner_add() 
Owner :1.942 Request Acquire
Jun 18 16:59:03 evasys bluetoothd[22500]: 
audio/transport.c:media_transport_add() Transport 
/org/bluez/22500/hci0/dev_00_23_78_AB_89_AC/fd0 Owner :1.942
Jun 18 16:59:04 evasys bluetoothd[22500]: Protocol not supported (93)
Jun 18 16:59:04 evasys bluetoothd[22500]: 
audio/transport.c:media_transport_remove() Transport 
/org/bluez/22500/hci0/dev_00_23_78_AB_89_AC/fd0 Owner :1.942
Jun 18 16:59:04 evasys bluetoothd[22500]: 
audio/transport.c:media_transport_release() Transport 
/org/bluez/22500/hci0/dev_00_23_78_AB_89_AC/fd0: read lock released
Jun 18 16:59:04 evasys bluetoothd[22500]: 
audio/transport.c:media_transport_release() Transport 
/org/bluez/22500/hci0/dev_00_23_78_AB_89_AC/fd0: write lock released
Jun 18 16:59:04 evasys bluetoothd[22500]: 
audio/transport.c:media_request_reply() Request Acquire Reply Input/output error
Jun 18 16:59:04 evasys bluetoothd[22500]: audio/transport.c:media_owner_free() 
Owner :1.942
Jun 18 16:59:04 evasys bluetoothd[22500]: 
audio/transport.c:media_owner_remove() Owner :1.942 Request Acquire
Jun 18 16:59:04 evasys bluetoothd[22500]: audio/headset.c:headset_set_state() 
State changed /org/bluez/22500/hci0/dev_00_23_78_AB_89_AC: 
HEADSET_STATE_PLAY_IN_PROGRESS -> HEADSET_STATE_CONNECTED
Jun 18 16:59:04 evasys bluetoothd[22500]: audio/media.c:headset_state_changed()

** Affects: bluez (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1331748

Title:
  Fails to set enable the HSP profile

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