[Pkg-alsa-devel] Bug#814757: Bug#814757: alsa-base: dmix/software mixing doesn't work

[Elimar Riesebieter]

* Andoru <aekkusu at gmail.com> [2016-02-16 01:27 +0200]:

> > Sometimes pulseaudio is the cause.....
> 
> $ apt-cache policy pulseaudio
> pulseaudio:
>   Installed: (none)
>   Candidate: 7.1-2
>   Version table:
>      7.1-2 500
>         500 http://ftp.debian.org/debian unstable/main amd64 Packages

What tells:

dpkg -l | egrep "(alsa|libaso)"
> 
> > According to http://alsa.opensrc.org/DmixPlugin you don't need to setup
> > dmix for analogue output. Dmix is enabled by default for soundcards which
> > don't support hardware mixing. You still need to set it up for digital
> > outputs.
> 
> If I don't set up dmix in the config file, it doesn't work either way.
> 
> > A better source for help is users at lists.debian.org as this was discussed
> > multiple times in the past.
> 
> Did they disable search engine indexing on those lists? I wasn't able to
> find much useful info for ALSA and this specific issue while searching.
> Also no posts over on those mailing lists turned up...

Just ask on those lists ;-) And please ask your searchengine on how
to use emailin mailing lists and learnwhat an email thread is.

> > A good start is just to throw away all the asoud.conf and .asoundrc
> > stuff. It overconstrains your system. The latest alsa is very tough and
> > should do what you need.
> 
> If I do that, I get no sound through the analog jack output. What probably
> happens is that the HDMI is used for sound output instead... Somebody at
> the ALSA user mailing list suggested me to use config #2 (from my first
> message in this bug report) just to set the default soundcard without
> setting dmix, but it didn't work...

Just do as user:

$ mv $HOME/.asoundrc $HOME/.asoundrc.save
$ cat <<EOF > $HOME/.asoundrc
defaults.pcm.!card PCH
defaults.ctl.!card PCH
EOF

As root:

# service alsa-utils restart

Elimar
-- 
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  Spike the office water cooler;-)