GNU bug report logs - #42175
"pulseaudio? #f" setting does not prevent pulseaudio from autostarting

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#42175: closed ("pulseaudio? #f" setting does not prevent
 pulseaudio from autostarting)
Date: Tue, 01 Feb 2022 02:29:02 +0000

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Your message dated Mon, 31 Jan 2022 21:27:59 -0500
with message-id <878ruvl3rk.fsf <at> gmail.com>
and subject line Re: bug#42175: "pulseaudio? #f" setting does not prevent pulseaudio from autostarting
has caused the debbugs.gnu.org bug report #42175,
regarding "pulseaudio? #f" setting does not prevent pulseaudio from autostarting
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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42175: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=42175
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From: Nathan Dehnel <ncdehnel <at> gmail.com>
To: bug-guix <at> gnu.org
Subject: "pulseaudio? #f" setting does not prevent pulseaudio from autostarting
Date: Fri, 3 Jul 2020 04:00:40 -0500

https://guix.gnu.org/manual/en/html_node/Sound-Services.html

(define %my-services
  ;; My very own list of services.
  (modify-services %desktop-services
    (alsa-service-type config =>
                       (alsa-configuration
                        (inherit config)
                        (pulseaudio? #f)))))

reconfigure, reboot, login to gnome, then

bash-5.0$ pgrep pulseaudio
517
1261

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Leo Prikler <leo.prikler <at> student.tugraz.at>
Cc: ncdehnel <at> gmail.com, 42175-done <at> debbugs.gnu.org
Subject: Re: bug#42175: "pulseaudio? #f" setting does not prevent pulseaudio
 from autostarting
Date: Mon, 31 Jan 2022 21:27:59 -0500

Hello,

Leo Prikler <leo.prikler <at> student.tugraz.at> writes:

> I don't think pulseaudio autostarting is governed by alsa.  There are
> two options you can try.
>
> 1. disable autospawning through configuration.  For that, try setting
> the client-conf field of the pulseaudio-configuration to 
>   '((autospawn . no))
> 2. Removing the pulseaudio package from gnome and anywhere else it
> might be propagated.  (I don't think it is propagated in other
> services).

Indeed, if you look at (gnu services sound), you'll see that what
pulseaudio? #t does (the default) is to add this to ALSA's asound.conf
file:

--8<---------------cut here---------------start------------->8---
`("# Use PulseAudio by default
pcm_type.pulse {
  lib \"" ,#~(string-append #$alsa-plugins:pulseaudio
                            "/lib/alsa-lib/libasound_module_pcm_pulse.so") "\"
}

ctl_type.pulse {
  lib \"" ,#~(string-append #$alsa-plugins:pulseaudio
                            "/lib/alsa-lib/libasound_module_ctl_pulse.so") "\"
}

pcm.!default {
  type pulse
  fallback \"sysdefault\"
  hint {
    show on
    description \"Default ALSA Output (currently PulseAudio Sound Server)\"
  }
}

ctl.!default {
  type pulse
  fallback \"sysdefault\"
}\n\n"
--8<---------------cut here---------------end--------------->8---

This configures ALSA applications to use pulseaudio as its default
output.  Many non-ALSA applications will attempt to use pulseaudio and
the configuration of it being allowed to autostart or not is to be made
at the level of pulseaudio-service-type, as pointed out in Liliana's
reply (thanks!).

Closing,

Maxim

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