Bluetooth not working for Qt6 snap with kde-neon extension?

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Hello,

I have built my Qt6 snap so far using

build-packages
  - pkg-config
  - qt6-base-dev
  - qt6-tools-dev
  - qt6-connectivity-dev
  - libqt6charts6-dev
  - libqt6opengl6-dev
  - libqt6serialport6-dev
  - libqt6svg6-dev
stage-packages:
  - libqt6core6
  - libqt6gui6
  - libqt6widgets6
  - libqt6charts6
  - libqt6serialport6
  - libqt6bluetooth6
  - libqt6help6
  - libqt6sql6-sqlite
  - libqt6svg6
  - libqt6printsupport6
plugs:
  - bluez
  - bluetooth-control

Now I want to switch to the KDE Neon 6 extension.

This works, but Bluetooth fails there: no controller is detected when calling “QBluetoothLocalDevice::allDevices()”.

Normally the message “qt.bluetooth.bluez: Bluez 5 detected.” is shown on working variant but this is missing here. So I guess it s BlueZ releated.

Qt docs say “On Linux, Qt Bluetooth uses a separate executable, sdpscanner, to integrate with the official Linux Bluetooth protocol stack (BlueZ).” Maybe it’s missing?

I made a litte test package if somebody wants to try itself.

It contains a simple app

#include <QApplication>
#include <QMessageBox>
#include <QBluetoothLocalDevice>

int main(int argc, char *argv[])
{
        QApplication app(argc, argv);

        QList <QBluetoothHostInfo> bhil = QBluetoothLocalDevice::allDevices();

        if(bhil.count())
        {
                QMessageBox::information(NULL, "Snap BT-Test", QString("%1 Bluetooth controller found.").arg(bhil.count()));
        }
        else
        {
                QMessageBox::warning(NULL, "Snap BT-Test", "No Bluetooth controller found!");
        }

        return 0;
}

and the snapcraft.yaml

name: bt-test
version: 1.0
summary: BT-Test
description: Bluetooth Test for KDE-Neon
grade: stable
base: core24
confinement: strict

parts:

  bt-test:
    plugin: nil
    override-build: |
      export PATH=/snap/kde-qt6-core24-sdk/current/usr/bin/qt6:$PATH
      qmake
      make
      install -Dt $SNAPCRAFT_PART_INSTALL/bin bt-test
    source: bt-test
    source-type: local

apps:

  bt-test:
    command: bin/bt-test
    extensions:
      - kde-neon-6
    plugs:
      - bluez
      - bluetooth-control

to build the snap.

It simply shows the count of detected Bluetooth controllers and works fine native, as flatpak and snap without kde-neon.

bt-test
bt-test748×195 24.3 KB

What else is needed in KDE Neon environment to enable Bluetooth for Qt6?

Thanks!