[pulseaudio-discuss] execute pacmd from root, pa started as non root user.

[Luis Cavalheiro]

Remember that machinectl works only on distros with that broken piece of
garbage called systemd.

Em 31 de dez de 2016 11:12 AM, "mohammed rilwan" <rilwan03 at gmail.com>
escreveu:

> Thank You Darwish!
> I googled the same question, but could not find perfect a answer as
> machinectl!
>
> Regards
> Rilwan
>
> On Fri, Dec 30, 2016 at 9:49 PM, Ahmed S. Darwish <darwish.07 at gmail.com>
> wrote:
> > Hello,
> >
> > On Fri, Dec 30, 2016 at 06:38:27PM +0530, mohammed rilwan wrote:
> > ...
> >>
> >> [root at dhcp-xx ~]# pacmd list
> >> No PulseAudio daemon running, or not running as session daemon.
> >>
> >> [root at dhcp-xx ~]# su svt -c 'pacmd list'
> >> XDG_RUNTIME_DIR (/run/user/0) is not owned by us (uid 1000), but by
> >> uid 0! (This could e g happen if you try to connect to a non-root
> >> PulseAudio as a root user, over the native protocol. Don't do that.)
> >> No PulseAudio daemon running, or not running as session daemon.
> >>
> >
> > That's because su and sudo are historically broken:
> >
> >     https://github.com/systemd/systemd/issues/825#issuecomment-127917622
> >
> > Use machinectl, the rather new and sane user switching command:
> >
> >     $ machinectl shell svt at .host /usr/bin/pacmd
> >
> > This should work correctly as it passes through pam_systemd, which
> > sets XDG_RUNTIME_DIR to the correct value on login. That way pacmd
> > can find the needed pulse server socket under /run/user/1000/pulse.
> >
> > If your distribution does not have "machinectl shell" yet, you have
> > two options.
> >
> > A) Do it manually; that is, something in the form of:
> >
> >     $ XDG_RUNTIME_DIR=/run/user/1000/ runuser -u svt pacmd
> >
> > B) Modify su behavior to pass through pam_systemd.so. This way,
> >    "su svt -c pacmd" will work perfectly:
> >
> >     session         required        pam_systemd.so
> >
> > Be careful of option (B) though; editing PAM files is always risky.
> > Finally, you may like to run pulse in system mode actually. Running
> > pulse in usermode UID 1000, then controlling it from root, sounds
> > like a recipe for race conditions.
> >
> > Regards,
> >
> > --
> > Darwish
> > http://darwish.chasingpointers.com
>
>
>
> --
> Mohammed Rilwan M
> ModelEngineering College
> Thrikkakara.
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> pulseaudio-discuss at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>
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