[Vm-dev] Audio problems on Linux - part 1 (OSS)
pbpublist at gmail.com
Thu Oct 10 03:05:52 UTC 2019
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 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
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...
 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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