VM's typical do not support accelerators. Not a good idea to use.

Use a real Linux (Ubuntu) box on an Intel CPU with integrated GPU (Gen6 or newer) and it will work just fine.

Windows doesnt support soapysdr or opencl

OK i have compile the Fix and install the 2.13.1 API and it works .. thx ..
i think on the install script we do use the 2.13.1 API and the 3.15 for newer Devices.. There should be a choice.

Quote from: tuvok on 10 Jan 2026, 22:00 hm .. i have on the old websdr.org Server the 2.30API ..
but on the New SDR i can not run the SDRplay and i have no idea.

    {
      "id": "rx3",
      "input": {
        "accelerator": "none",
        "audio_compression": "flac",
        "audio_sps": 12000,
        "brightness_offset": 0,
        "defaults": {
          "frequency": -1,
          "modulation": "FM",
          "squelch_enabled": false
        },
        "driver": {
          "agc": false,
          "antenna": "Yagi",
          "channel": 0,
          "device": "driver=sdrplay, label=SDRplay Dev2 RSP1A 180708AA93, serial=180708AA93",
          "format": "cs16",
          "gain": 15.0,
          "kind": "soapysdr"
        },
        "fft_size": 262144,
        "frequency": 145000000,
        "signal": "iq",
        "smeter_offset": 0,
        "sps": 2000000,
        "waterfall_compression": "zstd",
        "waterfall_size": 4096
      },
      "name": "RSP1a"
    }

Works well on API 3.07

I can concur, the auto-squelch works sometimes, other times not at all, there should be a slider to change the level.
At Phill's werbsdr you can see it failing on VHF when tiny signals are there but are not human made.
Then the squelch stays open.

Please make it manual....enable/disable and slider.

You need to use the sdrplay Soapy driver that uses the 2.13api. There are 2 versions of the driver.

This is the V2.13 Soapy driver.

https://github.com/pothosware/SoapySDRPlay2

But you have to remove the V3.xx Soapy driver first, typical locaked in /usr/local/lib/SoapySDR/modulesxxxx just delete the SDRplay modules.

No need to uninstall the V3.xx API, as this driver won't use it, but I would uninstall it.

[Edit] There is a proposed fix for Nova that may solve it. Maybe it solves it? See here: https://github.com/Steven9101/NovaSDR/pull/9

since 0.2.7 and 0.2.8 i have Problems with the Squelch.. this will not close correct.
and when i change the "Bands" the squelch is complete off and i do reenable it

hm .. i have on the old websdr.org Server the 2.30API ..
but on the New SDR i can not run the SDRplay and i have no idea.

Quote from: Bas ON5HB on 10 Jan 2026, 17:46 This is an SDRplay problem, it should not matter how fast Nova sends commands to Soapy.
I had the same problems before with the RSP-TCP server.
This is a problem of SDRplay.

Their API is buggy. V2.13 has the same problems, so I wonder if the chip has a problem.
As I have seen it many times, the chip just stops responding until you remove USB and plug it back in.

There's lots of info here too pointing to the SDRPlay API and this exact issue.

https://groups.io/g/SDRPlayUsers/topic/selectdevice_error/104335929

This is an SDRplay problem, it should not matter how fast Nova sends commands to Soapy.
I had the same problems before with the RSP-TCP server.
This is a problem of SDRplay.

Their API is buggy. V2.13 has the same problems, so I wonder if the chip has a problem.
As I have seen it many times, the chip just stops responding until you remove USB and plug it back in.