Description of problem:
Apper reminds me (hourly!) that I have 157 new updates available. dnf refuses to present them unless given explicit package names or matching wildcards.
Version-Release number of selected component (if applicable):
1) "dnf clean metadata"
2) "dnf --refresh upgrade"
3) backing up /var/cache/dnf, wiping it out and running the above
4) setting the updates-testing repo to a single repository and repeating above.
All give "nothing to do" message.
*IF*, however, I give dnf a specific package or wildcard match, in back-to-back runs and repeated samples, dnf magically finds it has updates. For example, running:
dnf upgrade 'kf5*' will show a list that matches apper's list of kf5* packages. However running dnf upgrade immediately after gives me the dreaded "nothing to do" message.
dnf gives "nothing to do" message when not provided a package name.
dnf upgrade should upgrade these packages without specifying names or wildcards.
Just to cover all the bases, the single repo I picked, Georgia Tech's www.gtlib.gatech.edu DOES have the updated packages listed.
*** This bug has been marked as a duplicate of bug 1265336 ***