SUMMARY I upgraded to Kubuntu 18.04, and noticed that the System Tray had disappeared from the panel. I tried to add it again STEPS TO REPRODUCE 1. Open the "sandwich menu" in the panel and select "Add widgets" 2. Chose to add "System Tray" OBSERVED RESULT Nothing EXPECTED RESULT The System Tray should be added to the panel SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kubuntu 18.04 KDE Plasma Version: 5.12.7 KDE Frameworks Version: 5.47.0 Qt Version: 5.9.5 ADDITIONAL INFORMATION The output from plasma shell: load applet: "org.kde.plasma.systemtray" relpath: "plasma/plasmoids/org.kde.plasma.systemtray" .. pathes: ("/usr/share/plasma/plasmoids/org.kde.plasma.systemtray") org.kde.plasma: Applet "/usr/share/plasma/plasmoids/org.kde.plasma.systemtray" could not be loaded. trying to show an empty dialog
>org.kde.plasma: Applet "/usr/share/plasma/plasmoids/org.kde.plasma.systemtray" could not be loaded. Is that the whole output? Does that file exist?
(In reply to David Edmundson from comment #1) > >org.kde.plasma: Applet "/usr/share/plasma/plasmoids/org.kde.plasma.systemtray" could not be loaded. > > Is that the whole output? Yes > Does that file exist? It's a directory: ls -la /usr/share/plasma/plasmoids/org.kde.plasma.systemtray total 40 drwxr-xr-x 3 root root 4096 Nov 15 18:07 . drwxr-xr-x 72 root root 4096 Nov 15 17:08 .. drwxr-xr-x 3 root root 4096 Feb 21 2018 contents -rw-r--r-- 1 root root 10667 Sep 25 12:09 metadata.desktop -rw-r--r-- 1 root root 13309 Sep 26 22:45 metadata.json
It also happens with the "Notifications" applet: load applet: "org.kde.plasma.notifications" relpath: "plasma/plasmoids/org.kde.plasma.notifications" .. pathes: ("/usr/share/plasma/plasmoids/org.kde.plasma.notifications") org.kde.plasma: Applet "/usr/share/plasma/plasmoids/org.kde.plasma.notifications" could not be loaded.
And after rebooting - again, again - it suddenly works. I don't wanna label this as NOT A BUG, as this shouldn't have happened.