On Tue, Apr 28, 2020 at 11:25:32PM +0200, Ludovic Courtès wrote:
> Could it be that the problem is in Audacity and not in alsa-lib?
I'm not 100% sure but I don't think so.
The function snd_config_hooks_call() is from alsa-lib I can't find any
way in alsa-lib for it work in this case, even though it aims to work by
default on systems with plugins in '/usr/lib/alsa-lib' or similar.
The lookup is performed in alsa-lib's 'src/dlmisc.c', by the function
snd_dlopen(), and it only looks in the hard-coded path provided by the
ALSA_PLUGIN_DIR C object macro, which ends up being alsa-lib's own store
directory.
> I can do this with mpg123:
>
> --8<---------------cut here---------------start------------->8---
> $ cat ~/.asoundrc
> pcm.!default {
> type pulse
> }
> $ mpg123 -o alsa …
> --8<---------------cut here---------------end--------------->8---
>
> and the sound goes through PulseAudio.
Is that on Guix System or another distro? On Guix System, this is
handled by the service alsa-service-type.
On Debian, using mpg123 from Guix, and with your ~/.asoundrc, it fails
in the same way as Audacity:
------
% mpg123 -o alsa ...
High Performance MPEG 1.0/2.0/2.5 Audio Player for Layers 1, 2 and 3
version 1.25.13; written and copyright by Michael Hipp and others
free software (LGPL) without any warranty but with best wishes
ALSA lib conf.c:3683:(snd_config_hooks_call) Cannot open shared library
libasound_module_conf_pulse.so
(/gnu/store/nyylgcnzmbw8wrn4sna2crl0g7zxxh33-alsa-lib-1.2.2/lib/alsa-lib/libasound_module_conf_pulse.so:
libasound_module_conf_pulse.so: cannot open shared object file: No such file
or directory)
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM default
[src/libout123/modules/alsa.c:181] error: cannot open device default
[src/libout123/libout123.c:455] error: Found no driver out of [alsa] working
with device <default>.
main: [src/mpg123.c:314] error: out123 error 3: failure loading driver module
------
