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Since a few days my Gnome desktop (v. 3.28.4) is showing notifications that appear only for a fraction of a second. I manage to see the notification bubble and that it contains some text, but I have no chance reading the text in it before it disappears.

I've tried to run dbus-monitor "eavesdrop=true,interface='org.freedesktop.Notifications'", but it doesn't print anything for these ghost notifications. Some notifications (e.g. from Slack) work fine, and also get printed correctly by the above command. So I'm not sure if these ghost notifications even come through dbus.

My question is, how can I debug this? How can I find out which application / service is sending the notifications? Does Gnome write a log file that I could check? Or can I enable some kind of debug logging? I've also tried an extension that should keep notifications listed until they get dismissed, but that didn't change anything. Perhaps there are other extensions that can help here?

  • I still haven't found a way to debug this, but I did manage to find out that the notifications correlated with my wired network connection trying to connect and failing to do so. Didn't realize this earlier because I was still constantly connected via WiFi. Thus in case anyone else has similar issues, try disabling network manager notifications and see if the problem goes away. – J.Nieminen Oct 28 '19 at 12:33

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