Re: How to Fix D-Bus Service Failures

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Noted. Thank you.

On Mon, Mar 10, 2025 at 2:21=E2=80=AFPM Simon McVittie <smcv-ZGY8ohtN/[email protected]>=
 wrote:

> On Sat, 08 Mar 2025 at 13:26:06 +0300, Abdullah Y=C4=B1ld=C4=B1z wrote:
> > In /usr/share/dbus-1/, there are no commented-out default values
> available
> > except session.conf:
>
> Most likely either your version of dbus is older than 2014, or your
> OS vendor has patched it. Please ask your OS vendor for support.
>
> > Is there a way to check what the default is for the system bus as it
> (i.e.,
> > max_completed_connections) is not visible at both /etc/bus-1
> and /usr/share/
> > dbus-1/?
>
> Check your OS distribution's source code, or ask your OS vendor for
> support.
>
> In upstream dbus, the defaults for the system bus are the hard-coded
> values in bus/config-parser.c. But if your OS vendor has patched or
> otherwise altered dbus, then we can't know how that version might be
> different; you'll need to ask them.
>
> > > The default on the session bus is 100000, and the session bus normall=
y
> > > only allows connections from one user, so the limit on connections pe=
r
> > > user is also 100000.
> >
> > This is defined as 900 in /usr/share/dbus-1/session.conf as shown in th=
e
> above
> > code snippet.
>
> Your version of dbus appears to have been patched, either by your
> OS vendor or locally. As far as I can see, that has never been the
> default in upstream dbus. (And that seems like a really low limit for
> the session bus: most of the limits in the session bus are meant to be
> "basically unlimited, but enough to prevent accidents".)
>
> > > The default for the system bus is 256. The default for the session
> > > bus is 100000, but the error messages you quoted are for the system
> bus.
> >
> > max_connections_per_user is defined as 100000 in
> /usr/share/dbus-1/session.conf
> > as shown in the above code snippet.
>
> The session bus configuration does not affect the behaviour of the
> system bus. If your system bus is producing errors, reconfiguring the
> session bus cannot solve those errors.
>
> > Is it possible that our D-Bus service is corrupted (as we never did any
> > modifications on these files)?
>
> I don't know what you or your OS vendor might have done.
>
>     smcv
>

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<div dir=3D"ltr">Noted. Thank you.</div><br><div class=3D"gmail_quote gmail=
_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Mar 10, 202=
5 at 2:21=E2=80=AFPM Simon McVittie &lt;<a href=3D"mailto:smcv-ZGY8ohtN/[email protected]=
m">smcv-ZGY8ohtN/[email protected]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-st=
yle:solid;border-left-color:rgb(204,204,204);padding-left:1ex">On Sat, 08 M=
ar 2025 at 13:26:06 +0300, Abdullah Y=C4=B1ld=C4=B1z wrote:<br>
&gt; In /usr/share/dbus-1/, there are no commented-out default values avail=
able<br>
&gt; except session.conf:<br>
<br>
Most likely either your version of dbus is older than 2014, or your<br>
OS vendor has patched it. Please ask your OS vendor for support.<br>
<br>
&gt; Is there a way to check what the default=C2=A0is for the system bus as=
 it (i.e.,<br>
&gt; max_completed_connections) is not visible at both /etc/bus-1 and=C2=A0=
/usr/share/<br>
&gt; dbus-1/?<br>
<br>
Check your OS distribution&#39;s source code, or ask your OS vendor for<br>
support.<br>
<br>
In upstream dbus, the defaults for the system bus are the hard-coded<br>
values in bus/config-parser.c. But if your OS vendor has patched or<br>
otherwise altered dbus, then we can&#39;t know how that version might be<br=
>
different; you&#39;ll need to ask them.<br>
<br>
&gt; &gt; The default on the session bus is 100000, and the session bus nor=
mally<br>
&gt; &gt; only allows connections from one user, so the limit on connection=
s per<br>
&gt; &gt; user is also 100000.<br>
&gt; <br>
&gt; This is defined as 900 in /usr/share/dbus-1/session.conf as shown in t=
he above<br>
&gt; code snippet.<br>
<br>
Your version of dbus appears to have been patched, either by your<br>
OS vendor or locally. As far as I can see, that has never been the<br>
default in upstream dbus. (And that seems like a really low limit for<br>
the session bus: most of the limits in the session bus are meant to be<br>
&quot;basically unlimited, but enough to prevent accidents&quot;.)<br>
<br>
&gt; &gt; The default for the system bus is 256. The default for the sessio=
n<br>
&gt; &gt; bus is 100000, but the error messages you quoted are for the syst=
em bus.<br>
&gt; <br>
&gt; max_connections_per_user is defined as 100000=C2=A0in /usr/share/dbus-=
1/session.conf<br>
&gt; as shown in the above code snippet.<br>
<br>
The session bus configuration does not affect the behaviour of the<br>
system bus. If your system bus is producing errors, reconfiguring the<br>
session bus cannot solve those errors.<br>
<br>
&gt; Is it possible that our D-Bus service is corrupted (as we never did an=
y<br>
&gt; modifications on these files)?<br>
<br>
I don&#39;t know what you or your OS vendor might have done.<br>
<br>
=C2=A0 =C2=A0 smcv<br>
</blockquote></div>

<br>
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