I never got any notifications by Discover even though the "Show a message in a popup" checkbox is checked (in the Discover's entry in the Notifications KCM). This is on a Plasma 5.6.4 archlinux box. I do see the number of available updates if I click the Discover tray icon. Reproducible: Always Steps to Reproduce: 1. Run "pkcon get-updates" when for sure there are some updates Actual Results: No popup about the available updates. Expected Results: Discover shows the notifications about available updates. Possibly related to #347496 ? I also tried to check the "Log to a file" checkbox in the KCM, and run again "pkcon get-updates" but nothing was written to the file.
I'm not really sure what's the reason, will need to investigate.. *** This bug has been marked as a duplicate of bug 347496 ***