I'm finally back to this. Here, I'll respond to the apper part.
(Ed said)
> apper is packagekit based. ... This is the first time I've
> seen you mention apper.
(and Samuel said)
> Right. ... anything that depends on PackageKit won't work. ...
> dnf does not require PackageKit, but Apper and Gnome Software do.
> By unmaking it, you allowed them to dbus activate them. You
> might end up getting update requests again.
I occasionally use apper to look for things. But I want to use dnf and
nothing else for installs, patches, and updates.
I (re-)masked packagekit.service, rebooted, and launched apper. Just
for testing purposes, I searched for "calculator". I get a pop-up error
saying "An internal system error has occurred - Apper". When I click
the pop-up's "Details >>" button, I see the following message: "Unit
packagekit.service is masked.". Trying to launch Software results in a
pop-up with the following message:
---------------
"Unable to get list of updates: failed to get updates for refresh: Error
calling StartServiceByName for org.freedesktop.PackageKit:
GDBus.Error:org.freedesktop.systemdl.UnitMasked: Unitpackagekit.service
is masked."
---------------
These confirm what Ed and Samuel say about apper and Software being
dependent on PackageKit. The problem is that now it looks to me like
apper and Software cannot be used to find to find tools and apps without
also checking for updates. Am I correct? How do I make these tools
useful for searching without them checking for updates?
Several times this year, while doing weekly patches (dnf upgrade
--refresh), a little window slid down from the top of the display (where
date and time are shown) indicating a problem. When I looked at the
details, it was a crash or abort of PackageKit. I clicked the button in
the problem reporter to submit a bug on this. The problem had already
been reported by many other people. I believe the main bug is #1480846
(see "https://bugzilla.redhat.com/show_bug.cgi?id=1480846";, comment 68).
Despite these problems, the patches did seem to complete successfully.
So I'm not really clear on what you mean when you say that dnf does
not depend on PackageKit.
On to trying the timer suggestions.
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