yes ; I think the daemon run regularly...
cups.service - CUPS Scheduler
Loaded: loaded (/usr/lib/systemd/system/cups.service; disabled; vendor preset: disabled)
Active: active (running) since Mon 2018-04-16 15:38:12 IDT; 1h 10min ago
Docs: man:cupsd(8)
Main PID: 857 (cupsd)
Status: "Scheduler is running..."
Tasks: 2 (limit: 4915)
CGroup: /system.slice/cups.service
├─ 857 /usr/sbin/cupsd -l
└─2462 /usr/lib/cups/notifier/dbus dbus://
Apr 16 16:05:02 localhost.localdomain cupsd[857]: PID 2738 (/usr/lib/cups/filter/gstoraster) was terminated normally with signal 15.
Apr 16 16:05:02 localhost.localdomain cupsd[857]: PID 2741 (/usr/lib/cups/backend/usb) was terminated normally with signal 15.
Apr 16 16:05:02 localhost.localdomain cupsd[857]: PID 2740 (/usr/lib/cups/filter/hpcups) did not catch or ignore signal 13.
Apr 16 16:05:13 localhost.localdomain cupsd[857]: Unloading...
Apr 16 16:05:24 localhost.localdomain cupsd[857]: Unloading...
Apr 16 16:06:00 localhost.localdomain cupsd[857]: REQUEST localhost - - "POST / HTTP/1.1" 200 158 Cancel-Subscription successful-ok
Apr 16 16:06:00 localhost.localdomain cupsd[857]: PID 2587 (/usr/lib/cups/notifier/dbus) exited with no errors.
Apr 16 16:06:00 localhost.localdomain cupsd[857]: REQUEST localhost - - "POST / HTTP/1.1" 200 158 Cancel-Subscription client-error-not-found
Apr 16 16:06:03 localhost.localdomain cupsd[857]: Unloading...
Apr 16 16:38:29 localhost.localdomain cupsd[857]: REQUEST localhost - - "POST / HTTP/1.1" 200 189 Renew-Subscription successful-ok
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in every case the printer works... Only look me strange the web the cups administration from the web browser it is not present...
I can also look to to change the file cupsd.conf But I would uderestand this new problem that I haven't with the others Ferdora version...