[Bug 1199059] Re: blueman and pulse's module-bluetooth-discover (A2DP audio sink devices failed to work with "bluetoothd : Unable to select SEP" in system log.)

[Chorca]

It seems some of the issues I was having seem to have stemmed from being
in standby mode and resuming thereafter.

>From a clean boot, here's my current steps/output to get the BT device
working:

1. Power on system, wait to 'settle':
May 21 15:00:46 chrispad bluetoothd[832]: Endpoint registered: sender=:1.49 path=/MediaEndpoint/HFPAG
May 21 15:00:46 chrispad bluetoothd[832]: Endpoint registered: sender=:1.49 path=/MediaEndpoint/HFPHS
May 21 15:00:46 chrispad bluetoothd[832]: Endpoint registered: sender=:1.49 path=/MediaEndpoint/A2DPSource
May 21 15:00:46 chrispad bluetoothd[832]: Endpoint registered: sender=:1.49 path=/MediaEndpoint/A2DPSink
May 21 15:00:47 chrispad dbus[733]: [system] Activating service name='org.blueman.Mechanism' (using servicehelper)
May 21 15:00:47 chrispad bluetoothd[832]: Endpoint unregistered: sender=:1.49 path=/MediaEndpoint/HFPAG
May 21 15:00:47 chrispad bluetoothd[832]: Endpoint unregistered: sender=:1.49 path=/MediaEndpoint/HFPHS
May 21 15:00:47 chrispad bluetoothd[832]: Endpoint unregistered: sender=:1.49 path=/MediaEndpoint/A2DPSource
May 21 15:00:47 chrispad bluetoothd[832]: Endpoint unregistered: sender=:1.49 path=/MediaEndpoint/A2DPSink
May 21 15:00:47 chrispad blueman-mechanism: Starting blueman-mechanism 
May 21 15:00:47 chrispad dbus[733]: [system] Successfully activated service 'org.blueman.Mechanism'
May 21 15:00:47 chrispad blueman-mechanism: loading Network 
May 21 15:00:47 chrispad blueman-mechanism: loading Config 
May 21 15:00:47 chrispad blueman-mechanism: loading Ppp 
May 21 15:00:47 chrispad blueman-mechanism: loading RfKill 
May 21 15:01:05 chrispad bluetoothd[832]: Endpoint unregistered: sender=:1.26 path=/MediaEndpoint/HFPAG
May 21 15:01:05 chrispad bluetoothd[832]: Endpoint unregistered: sender=:1.26 path=/MediaEndpoint/HFPHS
May 21 15:01:05 chrispad bluetoothd[832]: Endpoint unregistered: sender=:1.26 path=/MediaEndpoint/A2DPSource
May 21 15:01:05 chrispad bluetoothd[832]: Endpoint unregistered: sender=:1.26 path=/MediaEndpoint/A2DPSink
May 21 15:01:05 chrispad bluetoothd[832]: hci0: Remove UUID (0x0011) failed: Busy (0x0a)
May 21 15:01:17 chrispad blueman-mechanism: Exiting 


2. Load bluetooth-discover:
$ pactl load-module module-bluetooth-discover
23
May 21 15:01:28 chrispad bluetoothd[832]: Endpoint registered: sender=:1.63 path=/MediaEndpoint/HFPAG
May 21 15:01:28 chrispad bluetoothd[832]: Endpoint registered: sender=:1.63 path=/MediaEndpoint/HFPHS
May 21 15:01:28 chrispad bluetoothd[832]: Endpoint registered: sender=:1.63 path=/MediaEndpoint/A2DPSource
May 21 15:01:28 chrispad bluetoothd[832]: Endpoint registered: sender=:1.63 path=/MediaEndpoint/A2DPSink


3. Power on Bluetooth device (headset connection is started, then terminated):
May 21 15:02:04 chrispad bluetoothd[832]: /org/bluez/832/hci0/dev_00_16_94_0B_94_FA/fd0: fd(25) ready
May 21 15:02:04 chrispad rtkit-daemon[1390]: Successfully made thread 2301 of process 1968 (n/a) owned by '1000' RT at priority 5.
May 21 15:02:04 chrispad rtkit-daemon[1390]: Supervising 4 threads of 1 processes of 1 users.
May 21 15:02:07 chrispad bluetoothd[832]: Connection refused (111)
May 21 15:02:10 chrispad bluetoothd[832]: Audio connection got disconnected


4. Press 'play' button on Bluetooth device (initiates ad2p?):
May 21 15:02:17 chrispad bluetoothd[832]: /org/bluez/832/hci0/dev_00_16_94_0B_94_FA/fd1: fd(26) ready
May 21 15:02:17 chrispad rtkit-daemon[1390]: Successfully made thread 2303 of process 1968 (n/a) owned by '1000' RT at priority 5.
May 21 15:02:17 chrispad rtkit-daemon[1390]: Supervising 4 threads of 1 processes of 1 users.
May 21 15:02:17 chrispad kernel: [  127.156924] input: 00:16:94:0B:94:FA as /devices/virtual/input/input18

After that, I get AD2P audio available on my headset. I tried this same
procedure with an AD2P-only speaker setup, and it works as well after
selecting Connect -> Audio Sink in blueman.

The interesting thing here is that it seems to load this module during
startup, then unload it again a few seconds later. Curious as to why
that might be, but I agree, that does seem to resolve the issue. I'll
check how it works during standby/sleep and report as well.

-- 
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https://bugs.launchpad.net/bugs/1199059

Title:
  blueman and pulse's module-bluetooth-discover (A2DP audio sink devices
  failed to work with "bluetoothd : Unable to select SEP" in system
  log.)

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