No Diodon applet in the Notification Zone

I am converting this as the issue is not caused by Diodon directly. The discussion can continue this way to see how to solve the issue or adding links to upstream support request etc.

As a summary of the original discussion it seems that this is a general problem of the mate application indicator. One thing to check is that the mate-application-indicator package is installed (see code here https://github.com/mate-desktop/mate-indicator-applet) and the applet is actually added to the panel.

For more assistant you best call out to the Mate desktop community itself as they can give you better feedback. It would be great when links to discussions on this issue are added here, in case someone stumbles upon as well.

Hello,

> So one thing is that you verify that you have https://github.com/mate-
> desktop/mate-indicator-applet installed (there should be a deb package)
> and the applet is actually added to the panel.

In fact, the mate-indicator-applet package is not installed on either of
my two machines. (this should be?)
The notification zone should be provided by something else. (how to know?)

However, I noticed that on the machine which does not show the diodon
applet, the package  ayatana-indicator-application  is also present
(relating to some previous use of xfce4?)
Surprisingly, removing this package fix the issue! (and reinstalling it
cause the issue again)
This package may somehow divert the notification feature. (?)

So: Bingo! There is a workaround to this issue: remove the
ayatana-indicator-application package.
It's good to know (but this does not provide too many explanations on
the why ... )

Many thanks for your help.
Best regards,
Christophe

Thanks a lot for the additional information. Great that you have found a solution.

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