9

In the Notification area of the desktop we get a notification about an available update but opening Discover or even using apt or apt-get from the command line shows that the system is up to date.

Notification

Upon opening KDE's Discover we see "No updates".

No_Updates

P.S. I just helped someone with this issue so I thought I'd post this to help anyone having the same issue as there seems to be no question here about it.

9

This is a known bug with Plasma that is reported to be fixed in a newer version of Plasma 5.16.0 which is not available by default on Kubuntu 19.04. A quick search shows that it is not available in 18.04 either, so it is likely affected as well

Kubuntu 19.04 is currently running 5.15.4 (and 18.04 on 5.12) so you may encounter this annoying bug.

The bug is related to flatpaks. If you have flatpaks enabled in KDE's Discover, at least some packages are not update-able via Discover.


You can easily workaround the issue and fix in the terminal by running

flatpak update

This will update the outdated flatpak that Discover was unable to update and should make your persistent notification about a "phantom" update go away.

In this case, the flatpak affected was an Nvidia driver but the bug reports mention others as well.

  • 4
    Re. "Kubuntu 19.04 is currently running 5.15.4 so you may encounter this annoying bug.", I feel that if users are on 19.04, they could be advised to use the kubuntu backports ppa which would update their systems to Plasma 5.16.5 (currently). – DK Bose Sep 15 at 1:00
  • 1
    @DKBose not a bad suggestion but anyone considering it need to consider "This PPA will receive major version updates backported from later Kubuntu releases (and our development release)" so they may not be a stable as the current versions. Maybe not as much of an issue for anyone running 19.04 but might be for anyone on the LTS (I updated my answer to include 18.04 as it is likely affect by this bug as well) – TrailRider Sep 15 at 14:20

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