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Method "SetDiscoveryFilter" with signature "a{sv}" on interface "org.bluez.Adapter1" doesn't exist #889

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ClusterM opened this issue Jul 17, 2022 · 4 comments · Fixed by #900
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Method "SetDiscoveryFilter" with signature "a{sv}" on interface "org.bluez.Adapter1" doesn't exist #889

ClusterM opened this issue Jul 17, 2022 · 4 comments · Fixed by #900
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Backend: BlueZ Issues and PRs relating to the BlueZ backend bug Something isn't working

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@ClusterM
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ClusterM commented Jul 17, 2022 •
edited by dlech
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  • bleak version:
    bleak-0.14.3
  • Python version:
    Python 3.9.2
  • Operating System:
    Linux lovepoint 5.15.48-sunxi64 #22.05.3 SMP Wed Jun 22 07:33:24 UTC 2022 aarch64 GNU/Linux
  • BlueZ version (bluetoothctl -v) in case of Linux:
    bluetoothctl: 5.55

Description

Can't execute bleak/examples/scanner.py:

cluster@lovepoint:~/bleak/examples$ sudo python3 scanner.py
Traceback (most recent call last):
  File "/home/cluster/bleak/examples/scanner.py", line 31, in <module>
    asyncio.run(main(sys.argv[1] if len(sys.argv) == 2 else ADDRESS))
  File "/usr/lib/python3.9/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
    return future.result()
  File "/home/cluster/bleak/examples/scanner.py", line 26, in main
    device = await BleakScanner.find_device_by_address(address)
  File "/usr/local/lib/python3.9/dist-packages/bleak/backends/scanner.py", line 220, in find_device_by_address
    return await cls.find_device_by_filter(
  File "/usr/local/lib/python3.9/dist-packages/bleak/backends/scanner.py", line 249, in find_device_by_filter
    async with cls(detection_callback=apply_filter, **kwargs):
  File "/usr/local/lib/python3.9/dist-packages/bleak/backends/scanner.py", line 95, in __aenter__
    await self.start()
  File "/usr/local/lib/python3.9/dist-packages/bleak/backends/bluezdbus/scanner.py", line 155, in start
    assert_reply(reply)
  File "/usr/local/lib/python3.9/dist-packages/bleak/backends/bluezdbus/utils.py", line 23, in assert_reply
    raise BleakDBusError(reply.error_name, reply.body)
bleak.exc.BleakDBusError: [org.freedesktop.DBus.Error.UnknownObject] Method "SetDiscoveryFilter" with signature "a{sv}" on interface "org.bluez.Adapter1" doesn't exist

Same with bleak/examples/discover.py:

cluster@lovepoint:~/bleak/examples$ python3 discover.py
Traceback (most recent call last):
  File "/home/cluster/bleak/examples/discover.py", line 22, in <module>
    asyncio.run(main())
  File "/usr/lib/python3.9/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
    return future.result()
  File "/home/cluster/bleak/examples/discover.py", line 16, in main
    devices = await discover()
  File "/home/cluster/.local/lib/python3.9/site-packages/bleak/backends/scanner.py", line 115, in discover
    async with cls(**kwargs) as scanner:
  File "/home/cluster/.local/lib/python3.9/site-packages/bleak/backends/scanner.py", line 95, in __aenter__
    await self.start()
  File "/home/cluster/.local/lib/python3.9/site-packages/bleak/backends/bluezdbus/scanner.py", line 155, in start
    assert_reply(reply)
  File "/home/cluster/.local/lib/python3.9/site-packages/bleak/backends/bluezdbus/utils.py", line 23, in assert_reply
    raise BleakDBusError(reply.error_name, reply.body)
bleak.exc.BleakDBusError: [org.freedesktop.DBus.Error.UnknownObject] Method "SetDiscoveryFilter" with signature "a{sv}" on interface "org.bluez.Adapter1" doesn't exist
@ClusterM
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I commented out all assert_reply(reply) in scanner.py. It doesn't throw exception now but can't find any device.

@dlech
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dlech commented Jul 17, 2022

sudo python3 scanner.py

Sudo is not required and should not be used with Bleak.

bleak.exc.BleakDBusError: [org.freedesktop.DBus.Error.UnknownObject] Method "SetDiscoveryFilter" with signature "a{sv}" on interface "org.bluez.Adapter1" doesn't exist

It this the same problems as #693?

@dlech dlech added the Backend: BlueZ Issues and PRs relating to the BlueZ backend label Jul 17, 2022
@ClusterM
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It this the same problems as #693?

Seems like yes.

@dlech
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dlech commented Jul 17, 2022

We should probably try to make a better error message for this. Also #524 could help avoid the problem in some cases.

@dlech dlech added the bug Something isn't working label Jul 20, 2022
@dlech dlech mentioned this issue Jul 25, 2022
Merged
dlech added a commit that referenced this issue Jul 29, 2022
@dlech
v0.15.0
2bef806 
Added
-----

* Added new ``assigned_numbers`` module and ``AdvertisementDataType`` enum.
* Added new ``bluez`` kwarg to ``BleakScanner`` in BlueZ backend.
* Added support for passive scanning in the BlueZ backend. Fixes #606.
* Added option to use cached services, characteristics and descriptors in WinRT backend. Fixes #686.
* Added ``PendingDeprecationWarning`` to use of ``address_type`` as keyword argument. It will be moved into the
  ``winrt`` keyword instead according to #623.
* Added better error message when adapter is not present in BlueZ backend. Fixes #889.

Changed
-------

* Add ``py.typed`` file so mypy discovers Bleak's type annotations.
* UUID descriptions updated to 2022-03-16 assigned numbers document.
* Replace use of deprecated ``asyncio.get_event_loop()`` in Android backend.
* Adjust default timeout for ``read_gatt_char()`` with CoreBluetooth to 10s. Merged #891.
* ``BleakScanner()`` args ``detection_callback`` and ``service_uuids`` are no longer keyword-only.
* ``BleakScanner()`` arg ``scanning_mode`` is no longer Windows-only and is no longer keyword-only.
* All ``BleakScanner()`` instances in BlueZ backend now use common D-Bus object manager.
* Deprecated ``filters`` kwarg in ``BleakScanner`` in BlueZ backend.
* BlueZ version is now checked on first connection instead of import to avoid import side effects. Merged #907.

Fixed
-----

* Documentation fixes.
* On empty characteristic description from WinRT, use the lookup table instead of returning empty string.
* Fixed detection of first advertisement in BlueZ backend. Merged #903.
* Fixed performance issues in BlueZ backend caused by calling "GetManagedObjects" each time a
  ``BleakScanner`` scans or ``BleakClient`` is connected. Fixes #500.
* Fixed not handling "InterfacesRemoved" in ``BleakClient`` in BlueZ backend. Fixes #882.
* Fixed leaking D-Bus socket file descriptors in BlueZ backend. Fixes #805.
@dlech dlech mentioned this issue Jul 29, 2022
Merged
dlech added a commit that referenced this issue Jul 29, 2022
@dlech
v0.15.0
a5b98c7 
Added
-----

* Added new ``assigned_numbers`` module and ``AdvertisementDataType`` enum.
* Added new ``bluez`` kwarg to ``BleakScanner`` in BlueZ backend.
* Added support for passive scanning in the BlueZ backend. Fixes #606.
* Added option to use cached services, characteristics and descriptors in WinRT backend. Fixes #686.
* Added ``PendingDeprecationWarning`` to use of ``address_type`` as keyword argument. It will be moved into the
  ``winrt`` keyword instead according to #623.
* Added better error message when adapter is not present in BlueZ backend. Fixes #889.

Changed
-------

* Add ``py.typed`` file so mypy discovers Bleak's type annotations.
* UUID descriptions updated to 2022-03-16 assigned numbers document.
* Replace use of deprecated ``asyncio.get_event_loop()`` in Android backend.
* Adjust default timeout for ``read_gatt_char()`` with CoreBluetooth to 10s. Merged #891.
* ``BleakScanner()`` args ``detection_callback`` and ``service_uuids`` are no longer keyword-only.
* ``BleakScanner()`` arg ``scanning_mode`` is no longer Windows-only and is no longer keyword-only.
* All ``BleakScanner()`` instances in BlueZ backend now use common D-Bus object manager.
* Deprecated ``filters`` kwarg in ``BleakScanner`` in BlueZ backend.
* BlueZ version is now checked on first connection instead of import to avoid import side effects. Merged #907.

Fixed
-----

* Documentation fixes.
* On empty characteristic description from WinRT, use the lookup table instead of returning empty string.
* Fixed detection of first advertisement in BlueZ backend. Merged #903.
* Fixed performance issues in BlueZ backend caused by calling "GetManagedObjects" each time a
  ``BleakScanner`` scans or ``BleakClient`` is connected. Fixes #500.
* Fixed not handling "InterfacesRemoved" in ``BleakClient`` in BlueZ backend. Fixes #882.
* Fixed leaking D-Bus socket file descriptors in BlueZ backend. Fixes #805.
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bluezdbus/manager: add adapter check and error hbldh/bleak
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@dlech @ClusterM