[Bug 2051993] [NEW] bluetoothd: connect/disconnect - "AVRCP PDU parameters length don't match"

[^rooker]

Public bug reported:

I'm trying to connect to a bluetooth speaker.

The device is found, I can pair and connect - the speaker even
(literally) "says": 'connected', and /var/syslog confirms that. All
looks great; pulseaudio switches to the new audio sink - then
"connected: no".

/var/syslog also contains *a lot of messages* regarding that connection
(will post separately).

UPDATE: After adding "auto_switch=false" to my pulseaudio where it auto-
loads the "bluetooth-policy" module, then `sysctl restart bluetooth` and
`pulseaudio -k`: and after some time I *could finally connect* to this
(and other) bluetooth speaker devices that just would never stay
connected, but reconnect or bail out all the time.

I have no idea what I have done to fix this.
Basically, I copy/pasted from: https://askubuntu.com/questions/1205749/how-permanently-remove-or-disable-hsp-hfp-bluetooth-profile

I don't know yet, if this is reboot safe.
I dare to try, before I haven't understood what happened here.

I'm grateful for any insights or tips to get this "fixed" upstream?
Thank you.


Here's what I've modified in `/etc/pulse/default.pa`:

```
### Automatically load driver modules for Bluetooth hardware
.ifexists module-bluetooth-policy.so
#ORG: load-module module-bluetooth-policy
load-module module-bluetooth-policy auto_switch=false
.endif
```

-- 
I'm running Xubuntu 20.04 
bluez 5.53-0ubuntu3.7
pulseaudio 1:13.99.1-1ubuntu3.13

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

-- 
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https://bugs.launchpad.net/bugs/2051993

Title:
  bluetoothd: connect/disconnect - "AVRCP PDU parameters length don't
  match"

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