[pulseaudio-discuss] How manage volume remotely on pulseaudio

Tue Jan 19 21:45:00 UTC 2021

To be clear, you want pavucontrol installed on your kid's machine, and
you will run it directly from her machine.  (In theory, you can run
pavucontrol on your machine, but control volumes on your kid's
machine.  But I expect that to be even more complicated.)

So, the first step is to make sure X forwarding is working as
expected.  Ssh into your kid's machine, then try to run a familiar
graphical program.  I always use "xlogo" for this, it's about the
simplest X11 program possible.  But, in my experience, many modern
Linux distributions do not install this by default.  If xlogo is not
installed, and you can't figure out how to get it installed, try
running something you know works, like an xterm (or gnome-terminal,
Konsole, rxvt, etc), or even a browser.  This is just a sanity check
that you can run graphical X11 programs on your kid's computer, but
have them display on yours.

As I wrote that, I thought of something: do you know, does your
distribution use Wayland instead of X11?  If so, that complicates
things, as I am not familiar with getting Wayland to do remote display
the way X11 does.

Let us know how it goes!

On Tue, Jan 19, 2021 at 3:04 PM Christian Schmitz <list at schweb.com.ar> wrote:
>
> Dear Matt:
>         Thanks for the patience. I install pavucontrol and do
> "ssh -Y user at kid"
> I get an error, you can see in the image.
> if i run pavucontrol in the same machine of my kid goes to bacground and none
> is open.
>
> Best Regards
> Christian
>
>
>
> On Tuesday 19 January 2021 16:58:32 Matt Garman wrote:
> > Ssh with X forwarding: "ssh -Y user at kid".  The "-Y" is what does the X
> > forwarding.  Hopefully, with that you can run "pavucontrol", which is
> > a GUI that is loosely similar to alsamixer.
> >
> > On Tue, Jan 19, 2021 at 1:52 PM Christian Schmitz <list at schweb.com.ar>
> wrote:
> > > Dear Matt
> > >         I have full access to the machine, ( i install it for my wife and
> > > kid). Sadly i dont know how do ssh with X forwarding. So i go for pactl.
> > >
> > > user at kid > pactl
> > > no valid comand
> > > user at kid > pactl
> > > Big big list of things.
> > >
> > > i get some of sucess doing:
> > > pactl set-sink-volume 0 32768
> > >
> > > There are some tool more friendly that pactl, with look similar to
> > > alsamixer or etc?
> > >
> > > Best Regards
> > > Christian
> > >
> > > On Tuesday 19 January 2021 15:53:03 Matt Garman wrote:
> > > > If you can login as your child (i.e., same user account as him) on his
> > > > Linux system (ssh with X forwarding), then you should be able to run
> > > > "pavucontrol".  Loosely speaking, pavucontrol is to Pulse Audio as
> > > > alsamixer is to ALSA.  It's a GUI app.  I'm not sure if there exists a
> > > > strictly text equivalent of pavucontrol.
> > > >
> > > > There is also a commandline tool call "pactl".  This would allow you
> > > > to control the Pulse Audio daemon on your child's computer without a
> > > > GUI (though there is a bit of a learning curve).
> > > >
> > > > On Tue, Jan 19, 2021 at 12:13 PM Christian Schmitz <list at schweb.com.ar>
> > >
> > > wrote:
> > > > > Hi everyone:
> > > > >
> > > > > I am in the office with my computer ( Linux tumbleweed), and my kid
> > > > > of 3 years old is in another computer showing videos from youtube.
> > > > > Both computer have a normal user sound configuration ( each computer
> > > > > playing their own sound).
> > > > >
> > > > > Some videos are quieter and another are very loudness. With my first
> > > > > kid (10 years back) i do:
> > > > > 1)SSH as root
> > > > > 2)amixer and upper or lower the volume.
> > > > >
> > > > > Now i cant find a way to do this with pulseaudio. If i do
> > > > > 1)I do ssh as root successfully
> > > > > 2)
> > > > > 2.1) # amixer
> > > > > ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect:
> > > > > Connection refused
> > > > >
> > > > > 2.2) # alsamixer
> > > > > ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect:
> > > > > Conexión negada (Connection refused in spanish)
> > > > >
> > > > >
> > > > > 2.3) if i do sudo to the same linux user that is showing the video:
> > > > >
> > > > > user at computer> amixer
> > > > > XDG_RUNTIME_DIR (/run/user/0) is not owned by us (uid 1001), 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.)
> > > > > ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect:
> > > > > Connection refused
> > > > >
> > > > > How i can control the sound volume of my kid from my computer?
> > > > >
> > > > > Thanks all
> > > > > Christian Schmitz
> > > > >
> > > > > --
> > > > > Be Free, Be Linux
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>
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