I think it is a bug in sni-qt that sends too many events to gnome-panel. Other panels like fbpanel do not use indicators so the X11 tray is used there, which does not have the issue.
sni-qt is also unmaintained so I doubt that this will be fixed. You can use the X11 tray with gnome-panel too, by removing sni-qt package and adding “Notification area” applet to the panel. If you want to further debug the issue, output of dbus-monitor may be more interesting than strace output. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1779663 Title: QT4 Tray application and CPU load in 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-panel/+bug/1779663/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
