Unable to print via usb (HP Deskjet 6980)

[euskal]

I'm unable to print documents via usb connection (HP Deskjet 6980). There is no connection problem, (lsusb: Bus 001 Device 040: ID 03f0:8804 HP, Inc DeskJet 6980 series correctly detected), it just doesn't work...

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: cups 2.3.3op2-3ubuntu3
ProcVersionSignature: Ubuntu 5.11.0-37.41-generic 5.11.22
Uname: Linux 5.11.0-37-generic x86_64
ApportVersion: 2.20.11-0ubuntu65.3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 4 18:42:29 2021
InstallationDate: Installed on 2019-06-03 (853 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
Lpstat:
 device for Deskjet-6980-series: usb://HP/Deskjet%206980%20series?serial=MY796BS11G04Q7
 device for HP-Color-LaserJet-CM4540-MFP: socket://158.227.246.36:9100
MachineType: LG Electronics 13Z990-G.AA52B
Papersize: letter
PpdFiles:
 Error: command ['fgrep', '-H', '*NickName', '/etc/cups/ppd/HP-Color-LaserJet-CM4540-MFP.ppd', '/etc/cups/ppd/Deskjet-6980-series.ppd'] failed with exit code 2: grep: /etc/cups/ppd/HP-Color-LaserJet-CM4540-MFP.ppd: Permission denied
 grep: /etc/cups/ppd/Deskjet-6980-series.ppd: Permission denied
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-37-generic root=UUID=30e4f9a7-3fb6-4a39-a72e-b1a51a899771 ro quiet splash vt.handoff=7
SourcePackage: cups
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/29/2019
dmi.bios.release: 0.1
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: W1ZD1180 X64
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 13Z990
dmi.board.vendor: LG Electronics
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LG Electronics
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrW1ZD1180X64:bd01/29/2019:br0.1:svnLGElectronics:pn13Z990-G.AA52B:pvr0.1:sku:rvnLGElectronics:rn13Z990:rvrFAB1:cvnLGElectronics:ct10:cvr0.1:
dmi.product.family: Z Series
dmi.product.name: 13Z990-G.AA52B
dmi.product.version: 0.1
dmi.sys.vendor: LG Electronics

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jiang (jjlblue)]

The followings seem the same problems.
https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1986841
https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1982551