SUMMARY I'm not sure if this is issue my distribution or function built in KDE/Plasma. In System Tray Settings isn't available option "disable" for entry "Updates" (under this name hides Discover), so every time of Plasma starts this application also starts. In my Arch based distribution I don't use it only pamac, so I don't want to have duplicated application to update system. Anyway I have this application set in System Tray as "Always hidden", so I don't see its icon in System Tray in case of update, but I think application still starts if updates with Plasma when updates are available. STEPS TO REPRODUCE 1. Start Plasma with installed Discover and package manger your distribution 2. Set "Updates" entry in System Tray in "Always hidden" 3. OBSERVED RESULT If updates are available then will be shown unwanted notification coming from Discover EXPECTED RESULT Possibility to disable "Discover" in System Tray SOFTWARE/OS VERSIONS Linux/KDE Plasma: YES (available in About System) KDE Plasma Version: 5.20.5 KDE Frameworks Version: 5.78.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION In reddit appeared related thread: https://www.reddit.com/r/kde/comments/lavors/getting_rid_of_discover_keeps_popping_back_up/
I have a recollection that we had this when SNIs didn't have a consistent unique identifier between boots. I'm not sure hiding the icon is really the best solution here, as we would still have it running
(In reply to David Edmundson from comment #1) > I have a recollection that we had this when SNIs didn't have a consistent > unique identifier between boots. > > I'm not sure hiding the icon is really the best solution here, as we would > still have it running Yes. That's I just removed file /etc/xdg/autostart/x org.kde.discover.notifier.desktop just after update of Plasma, if I remembered. Nevertheless this solution doesn't help fully, because file appears after next update of Plasma., so also update it doesn't bring long effect. In pointed reddit thread there are couple suggestions how to get rid off Discover from System Tray. And the best (for Arch based distributions) is removing file and forcing by package manager to don't extract it file from proper package in moment of update KDE/Plasma. This is only work around.
*** This bug has been marked as a duplicate of bug 413053 ***