WDM-KS not working with Numark Mixtrack Pro FX

[iamjackg]

Bug Description

I picked up Mixxx again after a few years, and I'm still having some issues with my Numark Mixtrack Pro FX.

See #10186 and https://mixxx.discourse.group/t/mixxx-stopped-being-able-to-open-wdm-ks-devices/20791.

The behaviour seems to be somewhat different since back then: WDM-KS works fine with my built-in Realtek audio interface, but if I try to select my Mixtrack Pro FX I get an "Invalid device" error.

I tried with different sample rates, different buffer settings, but nothing works. I turned on debug mode, and the log didn't say anything useful: it just reported an "Invalid device" failure in SoundDevicePortAudio::open.

Debug [Main]: SoundDevicePortAudio::open() "SoundDeviceId(Speakers (MixTrack Pro FX), 29)"
Debug [Main]: framesPerBuffer: 1024
Debug [Main]: Requested sample rate:  44100 Hz, latency: 23.22 ms
Debug [Main]: Output channels: 4 | Input channels: 0
Debug [Main]: Opening stream with id 29
Warning [Main]: Error opening stream: Invalid device

Note that WASAPI does work fine.

Version

2.3.4

OS

Windows 10

[daschuer]

We use in our stable 2.3 branch Portaudio "2020-02-20" You may try the latest 2.4-alpha, that comes with "19.7" and check if that makes a difference. You find it here: https://downloads.mixxx.org/snapshots/main/mixxx-2.4-alpha-1421-g060b0e95d8-win64.msi

[daschuer]

Does using 48000 make a difference?

[iamjackg]

Hey there -- Using 48000 did not make a difference, but I got around to trying 2.4 and it does work fine. Do you think it would be doable to backport portaudio 19.7 to 2.3? Otherwise I can make do with Asio4All.

[daschuer]

Yes, a Portaudio update is possible. I will take care.

[JoergAtGithub]

@iamjackg Could you test if the issue still occurs with the following build (from #11451) : https://github.com/mixxxdj/mixxx/actions/runs/4637080755

[daschuer]

Fixed since #11451