Comment 3 for bug 1960601

@till-kamppeter, I'm not certain what you mean by the "upstream source." The printer auto-installed when I installed Ubuntu 20.04 shortly after its release.

After your post, I did:

# apt purge cups cups-client cups-bsd
# apt purge hplip hpijs printer-driver-gutenprint
# apt autoremove
# reboot
# apt install cups cups-client cups-bsd
# apt install printer-driver-gutenprint printer-driver-hpcups printer-driver-hpijs printer-driver-postscript-hp
# reboot
# journalctl -b 0

and got >2000 consecutive entries reading:

AVC apparmor="DENIED" operation="create" profile="snap.hplip-printer-app.hplip-printer-app-server" pid=2211 comm="hplip-printer-a" family="inet" sock_type="stream" protocol=0 requested_mask="create" denied_mask="create"

AppArmor is not expressly configured (meaning no one here manually configured it) on this system.

I'd guess this is what's at work but don't know. Please advise.

Otherwise, regarding snap, I don't code around others' steaming piles.