Audio not working in Ubuntu 24.10 because SDR++ cannot load audio sink module

[davidecorradini]

Hardware

• CPU: Intel® Core™ i7-6700HQ
• RAM: 16GB
• GPU: Nvidia GeForce GTX 960M
• SDR: RTL-SDR v4 (remote, I'm running a SDR++ server in another room)

Software

• Operating System: Ubuntu 24.10 (Kernel: Linux 6.11.0-8-generic)
• SDR++: 1.2.1 (Built on Nov 9, 2024)

Bug Description
I recently updated my system to Ubuntu 24.04, and SDR++ cannot load the audio sink module. In the sinks menu, I can only choose None and Network as sinks. In the terminal I get this error when SDR++ is starting:

[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/audio_sink.so: librtaudio.so.6: cannot open shared object file: No such file or directory

However, the file /usr/lib/sdrpp/plugins/audio_sink.so exists.

The rest of the software runs properly. I can connect to the remote SDR and see the graphs. I just can't listen to the demodulated audio.

Steps To Reproduce

1. Start SDR++
2. Audio sink is not available

Screenshots
Not required.

Additional info
For further details, I'll post here the full startup lig of SDR++.

[15/11/2024 09:27:21.000] [INFO] SDR++ v1.2.1
[15/11/2024 09:27:21.000] [INFO] Loading config
[15/11/2024 09:27:21.000] [INFO] Using OpenGL 3.0
[15/11/2024 09:27:21.000] [ERROR] Glfw Error 65548: Wayland: The platform does not support setting the window icon
[15/11/2024 09:27:21.000] [INFO] Loading icons
[15/11/2024 09:27:21.000] [INFO] Loading band plans
[15/11/2024 09:27:21.000] [INFO] Loading band plans color table
[15/11/2024 09:27:21.000] [INFO] Loading modules
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/airspyhf_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/file_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/tetra_demodulator.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/network_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/vhfvoiceradio.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/recorder.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/sdrpp_server_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/audio_source.so
[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/audio_source.so: librtaudio.so.6: cannot open shared object file: No such file or directory
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/rtl_sdr_source.so
[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/rtl_sdr_source.so: librtlsdr.so.2: cannot open shared object file: No such file or directory
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/audio_sink.so
[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/audio_sink.so: librtaudio.so.6: cannot open shared object file: No such file or directory
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/m17_decoder.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/airspy_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/network_sink.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/rfnm_source.so
[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/rfnm_source.so: librfnm.so: cannot open shared object file: No such file or directory
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/radio.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/spyserver_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/limesdr_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/hermes_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/bladerf_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/plutosdr_source.so
[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/plutosdr_source.so: libiio.so.0: cannot open shared object file: No such file or directory
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/sdrplay_source.so
[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/sdrplay_source.so: libsdrplay_api.so.3: cannot open shared object file: No such file or directory
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/scanner.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/hackrf_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/discord_integration.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/new_portaudio_sink.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/spectran_http_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/pager_decoder.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/rfspace_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/rigctl_server.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/frequency_manager.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/meteor_demodulator.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/perseus_source.so
[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/perseus_source.so: libperseus-sdr.so.0: cannot open shared object file: No such file or directory
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/rtl_tcp_source.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/iq_exporter.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/rigctl_client.so
[15/11/2024 09:27:21.000] [INFO] Loading /usr/lib/sdrpp/plugins/fobossdr_source.so
[15/11/2024 09:27:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/fobossdr_source.so: libfobos.so: cannot open shared object file: No such file or directory
[15/11/2024 09:27:21.000] [INFO] Initializing Airspy Source (airspy_source)
[15/11/2024 09:27:21.000] [INFO] Initializing AirspyHF+ Source (airspyhf_source)
[15/11/2024 09:27:22.000] [INFO] Initializing Audio Sink (audio_sink)
[15/11/2024 09:27:22.000] [ERROR] Module 'audio_sink' doesn't exist
[15/11/2024 09:27:22.000] [INFO] Initializing Audio Source (audio_source)
[15/11/2024 09:27:22.000] [ERROR] Module 'audio_source' doesn't exist
[15/11/2024 09:27:22.000] [INFO] Initializing BladeRF Source (bladerf_source)
[15/11/2024 09:27:22.000] [ERROR] Could not list devices -7
[15/11/2024 09:27:22.000] [INFO] Initializing File Source (file_source)
[15/11/2024 09:27:22.000] [INFO] Initializing Frequency Manager (frequency_manager)
[15/11/2024 09:27:22.000] [INFO] Initializing HackRF Source (hackrf_source)
[15/11/2024 09:27:22.000] [INFO] Initializing Hermes Source (hermes_source)
[15/11/2024 09:27:22.000] [INFO] Initializing LimeSDR Source (limesdr_source)
[15/11/2024 09:27:22.000] [INFO] Initializing Network Sink (network_sink)
[15/11/2024 09:27:22.000] [INFO] Initializing PlutoSDR Source (plutosdr_source)
[15/11/2024 09:27:22.000] [ERROR] Module 'plutosdr_source' doesn't exist
[15/11/2024 09:27:22.000] [INFO] Initializing RFspace Source (rfspace_source)
[15/11/2024 09:27:22.000] [INFO] Initializing RTL-SDR Source (rtl_sdr_source)
[15/11/2024 09:27:22.000] [ERROR] Module 'rtl_sdr_source' doesn't exist
[15/11/2024 09:27:22.000] [INFO] Initializing RTL-TCP Source (rtl_tcp_source)
[15/11/2024 09:27:22.000] [INFO] Initializing Radio (radio)
[Resamp] predec: 32, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 4, interp: 96, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 128, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 1, interp: 24, decim: 25, inacc: 0.000000%, taps: 1900
[Resamp] predec: 1, interp: 24, decim: 25, inacc: 0.000000%, taps: 1900
[15/11/2024 09:27:22.000] [WARN] Demod switch took 1085 us
[15/11/2024 09:27:22.000] [INFO] Initializing Radio2 (radio)
[Resamp] predec: 32, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 4, interp: 96, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 128, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 1, interp: 24, decim: 25, inacc: 0.000000%, taps: 1900
[Resamp] predec: 1, interp: 24, decim: 25, inacc: 0.000000%, taps: 1900
[15/11/2024 09:27:22.000] [WARN] Demod switch took 908 us
[15/11/2024 09:27:22.000] [INFO] Initializing Recorder (recorder)
[15/11/2024 09:27:22.000] [INFO] Initializing Rigctl Server (rigctl_server)
[15/11/2024 09:27:22.000] [INFO] Initializing SDR++ Server Source (sdrpp_server_source)
[15/11/2024 09:27:22.000] [INFO] Initializing Scanner (scanner)
[15/11/2024 09:27:22.000] [INFO] Initializing SpyServer Source (spyserver_source)
[15/11/2024 09:27:22.000] [INFO] Initializing Tetra Decoder (tetra_demodulator)
[Resamp] predec: 128, interp: 72, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 8192, interp: 6, decim: 1, inacc: 0.000000%, taps: 456
[Resamp] predec: 8192, interp: 6, decim: 1, inacc: 0.000000%, taps: 456
[Resamp] predec: 8192, interp: 6, decim: 1, inacc: 0.000000%, taps: 456
[15/11/2024 09:27:22.000] [INFO] Initializing VHF Voice Radio (vhfvoiceradio)
[Resamp] predec: 32, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 4, interp: 96, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 64, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 64, interp: 112, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 64, interp: 5000, decim: 7813, inacc: 0.000000%, taps: 593750
[Resamp] predec: 8, interp: 96, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 8, interp: 96, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 64, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 64, interp: 112, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 64, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 64, interp: 112, decim: 125, inacc: 0.000000%, taps: 9500
[15/11/2024 09:27:22.000] [WARN] Demod switch took 60543 us
[15/11/2024 09:27:22.000] [INFO] Loading color maps
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/viridis.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/vivid.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/electric.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/inferno.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/plasma.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/temper_colors.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/classic_green.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/gqrx.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/smoke.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/magma.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/websdr.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/classic.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/turbo.json
[15/11/2024 09:27:22.000] [INFO] Loading /usr/share/sdrpp/colormaps/greyscale.json
[15/11/2024 09:27:22.000] [INFO] SDRPPServerSourceModule 'SDR++ Server Source': Menu Select!
[15/11/2024 09:27:22.000] [INFO] New DSP samplerate: 8000000.000000 (source samplerate is 8000000.000000)
[15/11/2024 09:27:22.000] [INFO] SDRPPServerSourceModule 'SDR++ Server Source': Tune: 0.000000!
[Resamp] predec: 1, interp: 24, decim: 25, inacc: 0.000000%, taps: 1900
[Resamp] predec: 1, interp: 24, decim: 25, inacc: 0.000000%, taps: 1900
[Resamp] predec: 8192, interp: 6, decim: 1, inacc: 0.000000%, taps: 456
[Resamp] predec: 8, interp: 96, decim: 125, inacc: 0.000000%, taps: 9500
[Resamp] predec: 64, interp: 4, decim: 5, inacc: 0.000000%, taps: 380
[Resamp] predec: 64, interp: 112, decim: 125, inacc: 0.000000%, taps: 9500
[15/11/2024 09:27:22.000] [INFO] SDRPPServerSourceModule 'SDR++ Server Source': Tune: 96175000.000000!
[15/11/2024 09:27:22.000] [INFO] Running post-init for Airspy Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for AirspyHF+ Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for BladeRF Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for File Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for Frequency Manager
[15/11/2024 09:27:22.000] [INFO] Running post-init for HackRF Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for Hermes Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for LimeSDR Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for Network Sink
[15/11/2024 09:27:22.000] [INFO] Running post-init for RFspace Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for RTL-TCP Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for Radio
[15/11/2024 09:27:22.000] [INFO] Running post-init for Radio2
[15/11/2024 09:27:22.000] [INFO] Running post-init for Recorder
[15/11/2024 09:27:22.000] [INFO] Running post-init for Rigctl Server
[15/11/2024 09:27:22.000] [INFO] Running post-init for SDR++ Server Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for Scanner
[15/11/2024 09:27:22.000] [INFO] Running post-init for SpyServer Source
[15/11/2024 09:27:22.000] [INFO] Running post-init for Tetra Decoder
[15/11/2024 09:27:22.000] [INFO] Running post-init for VHF Voice Radio
[15/11/2024 09:27:22.000] [INFO] Ready.

[AlexandreRouma]

you tried to install a 24.04 deb on 24.10, not gonna work.

[davidecorradini]

@AlexandreRouma is the 24.10 deb available for download? I don't see it. There are other ways to make it run on this Ubuntu version? Thanks

[AlexandreRouma]

there's not, you have to build from source for now.
I don't use ubuntu, so I don't provide a build as soon as they release a new version. There will be one when I'll have time to configure it and check that everything works properly.