[Vm-dev] Audio problems on Linux - part 1 (OSS)

[Fabio Niephaus]

Hi Phil,

I'm afraid I've never used the SoundPlugin, but it'd be great if you could
file issues like this on our GitHub [1]. This way they at least don't get
lost in our inboxes. Plus, the mailing list will also be notified.

Cheers,
Fabio

[1] https://github.com/OpenSmalltalk/opensmalltalk-vm/issues

On Thu, Oct 10, 2019 at 5:18 AM Phil B <pbpublist at gmail.com> wrote:

>
> One correction: The configuration that worked was running on OS X 10.10
> with the Squeak 5.1 VM.  (the latest VMs don't appear to support this
> version of OS X)
>
> On Wed, Oct 9, 2019 at 11:05 PM Phil B <pbpublist at gmail.com> wrote:
>
>> I'm having problems recording audio using a relatively recent (20190724)
>> build of the 64-bit VM on Linux (Debian 10) and was curious to see if this
>> is a known issue or not.  I've been running with the OSS drivers for a
>> while now[1] which have been running fine for audio playback at least
>> (provided I wrap launching the vm with padsp.)  However, I haven't needed
>> to record audio since I started using the OSS drivers.
>>
>> So recently I wanted to record audio (specifically using
>> SoundPlugin primitiveSoundStartRecording/primitiveSoundRecordSamples/primitiveSoundStopRecording)
>> and immediately ran into problems.  The image becomes almost completely
>> unresponsive (regardless of what priority level I run the audio recording
>> process at) and at best I get back a few fragments of audio when I stop
>> recording.  No error messages in the console, errors in the image, etc.
>> Just an unresponsive image and eventually an unusable recording.
>>
>> I switched over to another OS / VM (OS X 10.11) with the same image and
>> audio recording works just fine.  OK, so the image isn't itself doesn't
>> appear to be the problem, but rather some combination of my OS / VM /
>> driver setup.  My question is: should recording via OSS drivers be expected
>> to work?  If so, any suggestions on what I should be looking at?
>>
>> Thinking that this might be considered an obsolete/unsupported
>> configuration, I try changing my VM audio drivers which results in another
>> issue in part 2...
>>
>> [1] I started doing this due to Linux VM builds going a period of time
>> without alternate (ALSA/PulseAudio) audio drivers included.  Not sure if
>> this has been resolved or not given my issue in part 2.
>>
>
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