bleak.exc.BleakDBusError: [org.bluez.Error.Failed] Operation already in progress

[cgleiyucun]

树莓派4b
python3.9.2
程序只进行扫描，不进行蓝牙连接，但出现扫描报错 bleak.exc.BleakDBusError: [org.bluez.Error.Failed] Operation already in progress
The program only performs scanning and does not establish a Bluetooth connection, but a scanning error occurs bleak.exc.BleakDBusError: [org.bluez.Error.Failed] Operation already in progress

code:

    while True:
        try:
            devices: dict = await BleakScanner.discover(timeout=duration,
                                                        return_adv=True)  # , detection_callback=callback
            device_obj_list = fileter_device(devices)
            logger.info(f"device_mac_list:{device_obj_list}")
            task_list = [process(device) for device in device_obj_list]  # 无连接逻辑 No connect
            # run the tasks
            await asyncio.gather(*task_list)

            if (datetime.datetime.now() - start_time).seconds > 60 * 60 * 12:
                cleaner = BluetoothCacheCleaner()
                await cleaner.fast_cleanup()
                await asyncio.sleep(5)
                start_time = datetime.datetime.now()
                restart_bluetooth()
                check_restart_success()
            if (datetime.datetime.now() - ng_release_time).seconds > 60 * 60 * 24 * 3:
                ng_cgm_list.clear()
                ng_release_time = datetime.datetime.now()
            await asyncio.sleep(30)
            err_num = 0
        except Exception as e:
            logger.warning(f"扫描失败，{e}")  # 抛出异常 bleak.exc.BleakDBusError: [org.bluez.Error.Failed] Operation already in progress
            if "org.bluez.Error" in str(e) or "No powered Bluetooth adapters found" in str(e):
                start_time = datetime.datetime.now()
                restart_bluetooth()
                check_restart_success()

[dlech]

task_list = [process(device) for device in device_obj_list]

Trying to connect to more than one device at a time is asking for trouble. Just connect to one device, then when it is connected, start the connection to the next and so on.

[cgleiyucun]

task_list = [process(device) for device in device_obj_list]

Trying to connect to more than one device at a time is asking for trouble. Just connect to one device, then when it is connected, start the connection to the next and so on.

task_list = [process(device) for device in device_obj_list]
There is no logic to connect to the device in the process method, and only the address property of BLEDevice is used

[dlech]

I see. I should have read more carefully. Can you share the logs with the environment variable set BLEAK_LOGGING=1. Also, what does restart_bluetooth() do?

[cgleiyucun]

The device is not with me, so I cannot provide detailed logs at the moment

def restart_bluetooth():
    # 重启蓝牙服务
    logger.warning("sudo systemctl restart bluetooth")
    try:
        subprocess.run(f"sudo systemctl restart bluetooth", shell=True,check=True)
    except Exception as e:
        logger.error(f"restart bluetooth error: {e}")