GNU bug report logs - #28088
"The name org.a11y.Bus was not provided by any .service files" with multiple applications

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From: iyzsong <at> member.fsf.org (宋文武)
To: 28088 <at> debbugs.gnu.org
Subject: bug#28088: "The name org.a11y.Bus was not provided by any .service files" with multiple applications
Date: Wed, 23 Aug 2017 21:53:56 +0800

ng0 <ng0 <at> infotropique.org> writes:

> ng0 transcribed 1.6K bytes:
>> Upon starting for example emacs in spectrwm I get this message:
>> [1]   Done                    emacs
>> user <at> abyayala ~$
>> ** (emacs-25-2:19121): WARNING **: Error retrieving accessibility
>> bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name
>> org.a11y.Bus was not provided by any .service files
>> 
>> It works alright, but I have seen the exact same message while
>> trying to figure out why mate-terminal does not start.
>> -- 
>> ng0
>> GnuPG: A88C8ADD129828D7EAC02E52E22F9BBFEE348588
>> GnuPG: https://n0is.noblogs.org/my-keys
>> https://www.infotropique.org https://krosos.org
>
> It is worth mentioning that this only happens with a
> desktop-services ressembling services list + no xfce-service
> or gnome-service in the system config.
>
> Reconfiguring and adding GNOME, switching tp GNOME makes
> this message not appear. We need to narrow down where
> this error comes from.

GTK+ applications will provide accessibility support over this dbus
service, so the AT-SPI clients (screen reader etc.) could use them.

And this 'org.a11y.Bus' service can be auto activated by the dbus
session daemon if the 'at-spi2-core' package is available.  If not,
we'll get thoese warnning from applications.

Usually they're harmless, and can be suppressed by set the environment
variable 'NO_AT_BRIGE=1'.

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