Since upgrading to F27, I have received a notification every day that "Important OS and application updates are ready to be installed." However, much of the time it isn't true. I run sudo dnf upgrade, and there is nothing to do. This didn't happen for me with F25 and F26.
I expect that Gnome Software isn't aware of you changing things behind it and only checks once in a while, but still notifies you every day.
These notifications appear due to the fact that dnf and PackageKit, on which gnome-software depends on, are (still) running side-by-side. You can get rid of those 'confusing notifications' by disabling the 'automatically download updates' feature of GNOME Software and by disabling the cache of PackageKit.
Execute gsettings set org.gnome.software download-updates false.
Additionally execute sudo nano /etc/PackageKit/PackageKit.conf.
Uncomment the line #KeepCache=false (remove the character #).
Now updates are managed by DNF exclusively without the notifications.
Asked: 2018-01-07 13:27:50 -0600
Seen: 280 times
Last updated: Jan 09 '18
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I have the same question here https://ask.fedoraproject.org/en/ques...
because I didn't find your question.
Like your case, dnf update and dnf check-update reported nothing to do.
dnf refresh followed by dnf update and dnf check-update showed no updates.
However dnf clean all followed by dnf check-update and it found all the updates listed in PackageKit.
I do not understand this at all or how disabling PackageKit will fix this.