alsa – Bluez + BlueAlsa: AVRCP commands not received

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I cannot see any AVRCP communication when using dbus-monitor. Not a single signal nor property changed.

I use Bluez 5.68 and BlueAlsa v4.1.0-7-ge6218b5

Logs on BT speaker connection:

Aug 02 10:18:03 nuc058 kernel: input: Grundig JAM (AVRCP) as /devices/virtual/input/input21
Aug 02 10:18:03 nuc058 systemd-logind[557]: Watching system buttons on /dev/input/event4 (Grundig JAM (AVRCP))

I can see those commands incomming with hci-dump.

I confirmed that I can sends those commands to my phone. I just cannot receive anything from speakers and headphones on DBus layer.

Where should I start checking?

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