[pulseaudio-discuss] Bluetooth pulseaudio multiple device entries

Sat Apr 6 02:53:13 PDT 2013

On 04/06/2013 05:18 AM, Mikel Astiz wrote:
> Hi Colin,
>
> On Sat, Apr 6, 2013 at 11:01 AM, Colin Beckingham <colbec at start.ca> wrote:
>>
>>
>> On 04/06/2013 04:05 AM, Mikel Astiz wrote:
>>>
>>> Hi Colin,
>>>
>>> On Fri, Apr 5, 2013 at 2:49 PM, Colin Beckingham <colbec at start.ca> wrote:
>>>>
>>>>
>>>>
>>>> On 04/05/2013 08:16 AM, Mikel Astiz wrote:
>>>>>
>>>>>
>>>>> Hi Colin,
>>>>>
>>>>> On Fri, Apr 5, 2013 at 1:54 PM, Colin Beckingham <colbec at start.ca>
>>>>> wrote:
>>>>>>
>>>>>>
>>>>>> Good day: using Opensuse 12.3 with standard desktop kernel from repo,
>>>>>> pulseaudio under Gnome.
>>>>>>
>>>>>> Steps to reproduce:
>>>>>> 1. clean boot of machine.
>>>>>> 2. USB Bluetooth adapter Belkin which works reliably
>>>>>> 3. Issue command as root "hciconfig 0 sspmode 0" - this is essential
>>>>>> otherwise bluetooth device not recognized.
>>>>>> 4. Open gnome sound settings from user menu; onboard sound device is
>>>>>> present, only one entry
>>>>>> 5. switch on bluetooth device Samsung WEP 475
>>>>>> 6. device is recognized and paired, an entry appears in PA list
>>>>>> 7. about 10 sec later a second entry for the same BT device appears in
>>>>>> the
>>>>>> list
>>>>>> 8. after playing with the windows sometimes the second entry will go
>>>>>> away
>>>>>> 9. at least one of the entries will work and PA shows amplitude changes
>>>>>> registering for the input device
>>>>>> 10. sometimes clicking the wrong one will cause Gnome settings window
>>>>>> to
>>>>>> crash, but BT and PA are still running and device is working and gnome
>>>>>> window can be opened again.
>>>>>>
>>>>>> Clearly the multiple entries thing is not normal behaviour.
>>>>>> Might be a BT issue, or a PA issue, or a Gnome issue or other.
>>>>>> It's a tossup where where to start, can I rule out the BT side?
>>>>>
>>>>>
>>>>>
>>>>> Can you specify which versions of BlueZ and PulseAudio you're using?
>>>>>
>>>>> Also, please check:
>>>>> a. which modules are loaded during the issue by doing "pactl list
>>>>> modules" or similar.
>>>>> b. which bluetooth devices BlueZ registers on D-Bus: "test-device
>>>>> list"/"bluez-test-device list" or similar. You can alternatively use a
>>>>> tool such as d-feet.
>>>>>
>>>>> Cheers,
>>>>> Mikel
>>>>
>>>>
>>>>
>>>> Mikel -
>>>>
>>>> -----------------
>>>>
>>>> $ pulseaudio --version
>>>> pulseaudio 3.0
>>>>
>>>> -------------------
>>>>
>>>> # bluetoothd --version
>>>> 4.101
>>>>
>>>> -------------------
>>>>
>>>> # test-device list
>>>> 00:0D:E6:6E:51:47 WEP475
>>>>
>>>> -------------------
>>>>
>>>> # pactl list modules
>>>>
>>>> ### this module is added after starting the Samsung device
>>>>
>>>> Module #28
>>>>       Name: module-bluetooth-device
>>>>       Argument: address="00:0D:E6:6E:51:47"
>>>> path="/org/bluez/455/hci0/dev_00_0D_E6_6E_51_47"
>>>>       Usage counter: 0
>>>>       Properties:
>>>>           module.author = "Joao Paulo Rechi Vita"
>>>>           module.description = "Bluetooth audio sink and source"
>>>>           module.version = "3.0"
>>>>
>>>> -------------------
>>>>
>>>> A small point to add to steps to reproduce:
>>>>
>>>> 11. with two entries showing in PA, shut down of BT device removes the
>>>> latest added entry from the PA list leaving one entry for the device even
>>>> though it is not active.
>>>
>>>
>>> As you probably guessed, the traces you provide look good, no
>>> duplicated devices there. I would thus assume it's a UI issue, you
>>> might confirm this by using pavucontrol and checking whether the card
>>> (representing the device) is listed twice or not.
>>>
>>> Besides, when you say "7. about 10 sec later a second entry for the
>>> same BT device...", is this happening only after you pair the device?
>>> Or does the issue also reproduce every time the device gets connected
>>> (without unpair + pair)?
>>>
>>> Cheers,
>>> Mikel
>>
>>
>> Thanks Mikel
>>
>> My testing to this point has been that the device was connected
>> automatically having been pre-registered and paired.
>>
>> So I deleted the pre-registered entry and re-paired the device. The device
>> entry behaved correctly when first paired, however when I left the
>> registration in place, unconnected the device and then reconnected it, the
>> duplicates reappeared.
>>
>> In fact each time I selected an entry at random and clicked "test speakers"
>> it created a new entry. At one point I had 6 entries all working and all the
>> same device.
>>
>> It certainly looks like a UI issue. I will contact the PA folks.
>> Thanks for helping me remove the BT side from the query list.
>
> [CCing PulseAudio mailing list]
>
> In the PA side, double check that you don't have duplicated instances
> of module-bluetooth-device. There was an issue
> (https://bugs.freedesktop.org/show_bug.cgi?id=57239) similar to the
> one you describe, which should have been fixed for 3.0 (commit
> 41055145d7563c20fd58ed4b0a9b349c2363bb02).
>

Thanks Mikel

With about 6 entries in my Gnome PA window:

# pactl list modules | grep bluetooth
	Name: module-bluetooth-policy
		module.description = "When a bluetooth sink or source is added, load 
module-loopback"
	Name: module-bluetooth-discover
		module.description = "Detect available bluetooth audio devices and 
load bluetooth audio drivers"
	Name: module-bluetooth-device

So there is only one bluetooth module loaded for the device even though 
there are many devices listed in the window.

FWIW I recently upgraded from Opensuse 12.2 to 12.3, I don't remember 
seeing this issue in 12.2.

I did not approach the PA folks on this yet, but I see that you have 
cc'd the list and I will do the same.

Cheers
-- 
---
Colin Beckingham
http://www.it4gh.com