Pa_Initialize randomly started hanging on Windows

[jcelerier]

This bug just appeared on my machine after a reboot ; it triggers on the latest HEAD but I've been as far back as trying on a 2018 puredata version I had lying around, and it triggers as well so maybe it's a windows update causing issues.

The bug is very simple: Pa_Initialize hangs forever.
Here's the stack trace I'm getting from pa_devs example:

I thought it could be a buggy driver so I went through all of them and removed them (except my main loudspeakers which work fine on every non-portaudio app, browser etc.) (edit: also removed that one to see) and it still hangs.

What could be ways to debug this ?

[RossBencina]

Hi! Thanks for the bug report. Sounds bad.

• Which version(s) of Windows?
• What hardware (?x86, ARM? what audio hardware?)
• Which PortAudio host APIs are compiled into PortAudio?
• Does it happen on more than one machine?
• Could you post the stack trace as text please?

From what I understand that stack trace doesn't reference PortAudio, Is the hang even in the thread that you referenced?

You could try tracing into Pa_Initialize in the debugger and see exactly where it hangs.

[jcelerier]

Heya,
Should have put the rest of the stack trace but this was just
after Pa_Initialize.

• last windows 10
• X86
• some basic usb audio (bower & Wilkins mm-1)
• only this machine, and only on windows - works fine on Linux on the same hw

I'm a few thousand kilometres away from this machine right now, will retry when I'm back