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Subject:	Re: [geda-user] gEDA 1.10.2 printing issues (was [ANNOUNCE]...)
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From:	"Glenn (glimrick AT epilitimus DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Date:	Tue, 29 Dec 2020 11:49:17 -0800
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Girvin Herr (gherrl AT fastmail DOT com) [via geda-user AT delorie DOT com] wrote:
>
> Glenn,
>
> When I shut down X yesterday, sure enough, I saw a GDbus error. So I
> copied it down before I logged out:
>
>     <snip>
>
>     (thunderbird:1948): Gtk-WARNING **: Unknown paper size Custom Size 1
>
>     **(thunderbird:1948):WARNING **:
>     GDbus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
>     org.freedesktop.avahi was not provided by any .service files
>
>     **(thunderbird:1948):WARNING **:
>     GDbus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
>     org.freedesktop.avahi was not provided by any .service files
>
>     (thunderbird:1948): Gtk-WARNING **: Unknown paper size Custom Size 1
>
>     <snip>
>
> Note that "Custom Size 1" paper size is a size I made years ago for
> Firefox to print properly. I am not sure this size is needed any
> longer, but my Firefox is still using it in the default print dialog.
>
> These two errors look different, but notice the ID is the same (1948)
> and all from thunderbird, so I assume they are all connected.
>
> Since the X log does not timestamp the entries, I cannot say if these
> errors occurred from my shutdown or prior to shutdown sometime. I just
> checked the log in the F1 terminal and it does have similar GDBus
> entries, but for Firefox, not thunderbird, but still for "Custom Size
> 1" and avahi. So, it could be occurring before shutdown, where
> anything can happen.
>
> This message is similar to what I get in red in the gschem status
> window when I open the print dialog:
>
>     GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
>     org.freedesktop.Avahi was not provided by any .service
>     filesGDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The
>     name org.freedesktop.Avahi was not provided by any .service files
>
> Similar, but not identical. Note that it is doubled, similar to the
> messages from thunderbird.
>
> I will try changing Mozilla's print dialog to select another default
> standard paper size and see if that will work for me. If it does, I
> can delete my "Custom Size 1" size and see what happens.
>
> HTH.
>
> Girvin
>
>
I am just guessing here but the 1948 is probabliy the PID thunderbird
was running as so it would make sense that they all have the same #. All
the warnings mean is that thunderbird made a request on the dbus and
that request didn't succeed. Again as a guess thunderbird was probably
trying to find out which printers supported that paper size. Lots of
things use dbus, and anything that does so via gnome will be prone to
issuing gdbus errors/warnings because that is the gnome implementation
of the dbus interface. Avahi seems to be fairly widely used for service
discovery.

Based on what I know so far I don't think the dbus message is connected
to the hotkey problem and is probably an artifact of Slackware being
bare bones. By which I mean the Volkerding focuses on producing a basic
working system, rather than trying to produce a system that has every
possible whizbang on it. Makes the user work a bit more, but you gain a
better understanding of how the system works, IMO. Sometimes software
that is ubiquitous, but not mission critical, gets left out to be added
if the users want it. I think avahi falls into the category.

Another guess, there are two messages because based on my quick review
of the gtk print backend it makes a primary attempt at service discovery
and then a fallback attempt if the primary fails. But I haven't run the
code in a debugger to know for certain.

While they look ominous they are really only informational and not what
I would consider and "ERROR". If you had avahi running and got this then
yes it is important, but not in this case.

Just my $0.02 worth. B)
Glenn

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