Two indicator icons in panel

Thanks for reporting this issue.

When you have two indicator icons could you do the following:

1. go to a terminal and run "ps -ef | grep diodon" and attach the output here
2. take a screenshot of the panel and attach it.

This will help to further investigate the issue.

Here's the terminal ouput (I replaced the actual user name with <user>):

<user> 2303 1979 0 09:15 ? 00:00:00 diodon
<user> 4574 4518 0 09:16 pts/0 00:00:00 grep --color=auto diodon

Screenshot attached.

OK strange, as there is only one Diodon process running.

What Linux Mint flavor are you running?

Cinnamon DE under the main edition of version 21.

I tried this on a fresh installation of Linux Mint 21 and cannot reproduce it.

In Ubuntu 22.04 the Diodon version is actually 1.12.0. What way did you install the current version 1.13.0?

I originally installed Diodon, and have been getting updates from, your "diodon-team/stable" PPA. Interestingly, the Linux Mint Software Manager does show 1.13.0~ubuntu22.04.01 as being available through that source.

OK. What you could try is that you delete Diodon and then reinstall it again to avoid old desktop files which might not got correctly updated from the upgrade:

sudo apt purge libdiodon0 diodon
sudo apt update
sudo apt install diodon

Restart your whole computer and see whether it works.

Unfortunately, that didn't work. I figured all along that I'd end up deleting and reinstalling and that would do it, but surprisingly it didn't work.

What you could check is to look at the startup application list (there is an app in Cinammon) whether Diodon is only listed there once or twice?

If it is added twice, then remove one. If it is there only once, try to disable it and see whether Diodon still starts or not.

Diodon was only listed once in the Startup Applications list. I disabled it and rebooted, Diodon did not start (no icon and no running process). Starting Diodon manually resulted in just one tray icon. After re-enabling Diodon in the Startup Applications and rebooting, I'm back to two icons. Baffling. I don't think it should matter, but I realized I should have noted that I am running Diodon so that it only stores clipboard items in memory.

Reading through your feedback, I have a strong feeling that this issue has nothing to do with Diodon, but with the Ayantana Application Indicator in combination with the Cinammon desktop environment and its panels. Potentially a race condition.

The reason being is that the only thing Diodon does in terms of indicator is registering it with the Ayantana Indicator. Nothing else. Diodon uses unique logic that it cannot be run twice and we already ruled that possibility out as there was only one Diodon process running, but still you saw two Diodon icons.

See the code bit here https://github.com/diodon-dev/diodon/blob/master/plugins/indicator/indicator-plugin.vala which handles the indicator logic.

Therefore, I am converting this to a question. Feedback is very welcome with potential workarounds, links to other bug trackers etc.

Just to close the loop on this, I found that delaying Diodon's startup by 10 seconds fixed my problem. With no delay, two indicator icons after every boot. With the 10 second delay, only one icon. So, yes, probably a race condition. I'm happy to have it working fine with the 10 second delay.

Thanks. Great that you found a workaround. Added your answer to the question as well, in case someone else has the same issue.