cups hplip not install printer

[Stefano Dall'Agata]

After upgrading to Ubuntu 20.04 I can't print anymore.

Description: Ubuntu 20.04 LTS
Release: 20.04

cups:
  Installato: 2.3.1-9ubuntu1.1
  Candidato: 2.3.1-9ubuntu1.1
  Tabella versione:
 *** 2.3.1-9ubuntu1.1 500
        500 http://it.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
        100 /var/lib/dpkg/status
     2.3.1-9ubuntu1 500
        500 http://it.archive.ubuntu.com/ubuntu focal/main amd64 Packages

hplip:
  Installato: 3.20.3+dfsg0-2
  Candidato: 3.20.3+dfsg0-2
  Tabella versione:
 *** 3.20.3+dfsg0-2 500
        500 http://it.archive.ubuntu.com/ubuntu focal/main amd64 Packages
        100 /var/lib/dpkg/status

I tried to reinstall the printer, but it is not being re-saved by cups / hplip

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: cups 2.3.1-9ubuntu1.1
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
Uname: Linux 5.4.0-29-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon May 18 02:24:07 2020
InstallationDate: Installed on 2020-05-17 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Lpstat: device for DeskJet_3630: hp:/usb/DeskJet_3630_series?serial=CN8AM7H3230658
MachineType: LENOVO 80G0
Papersize: a4
PpdFiles: Error: command ['fgrep', '-H', '*NickName', '/etc/cups/ppd/DeskJet_3630.ppd'] failed with exit code 2: grep: /etc/cups/ppd/DeskJet_3630.ppd: Permission denied
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-29-generic root=UUID=6a8469e0-ecea-4a86-8040-b0caaa938fe4 ro quiet splash vt.handoff=7
SourcePackage: cups
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/18/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: A7CN40WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: Lancer 5A6
dmi.board.vendor: LENOVO
dmi.board.version: SDK0F82993WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G50-30
dmi.modalias: dmi:bvnLENOVO:bvrA7CN40WW:bd07/18/2014:svnLENOVO:pn80G0:pvrLenovoG50-30:rvnLENOVO:rnLancer5A6:rvrSDK0F82993WIN:cvnLENOVO:ct10:cvrLenovoG50-30:
dmi.product.family: IDEAPAD
dmi.product.name: 80G0
dmi.product.sku: LENOVO_MT_80G0_BU_idea_FM_Lenovo G50-30
dmi.product.version: Lenovo G50-30
dmi.sys.vendor: LENOVO

[Stefano Dall'Agata (essedia1960)]

These problems are highlighted with hplip-gui diagnostics:

DeskJet-3630
------------
Type: Printer
Device URI: hp:/usb/DeskJet_3630_series?serial=CN8AM7H3230658
PPD: /etc/cups/ppd/DeskJet-3630.ppd
warning: Failed to read /etc/cups/ppd/DeskJet-3630.ppd ppd file
PPD Description:
Printer status: la stampante DeskJet-3630 è inattiva. è stata abilitata da lun 18 mag 2020, 02:12:27
error: Unable to communicate with device (code=12): hp:/usb/DeskJet_3630_series?serial=CN8AM7H3230658
error: Device not found
error: Communication status: Failed

--------------
| PERMISSION |
--------------

Checking Permissions....

Checking for Configured Queues....
warning: Fail to read ppd=/etc/cups/ppd/DeskJet-3630.ppd file
warning: Insufficient permission to access file /etc/cups/ppd/DeskJet-3630.ppd
warning: Could not complete Queue(s) configuration check

Checking for HP Properitery Plugin's....
No plug-in printers are configured.

Checking for Printer Status....
error: 'DeskJet-3630' Printer is either Powered-OFF or Failed to communicate.
Turn On Printer and re-run hp-doctor

Diagnose completed...

[Stefano Dall'Agata (essedia1960)]

In another partition that I keep for testing, I had made a clean installation of 20.04 and after installing hplip the same printer works without problems.

[Sebastien Bacher (seb128)]

thank you for your bug report, what's the output of

$ ls -l /etc/cups/ppd/DeskJet-3630.ppd
$ ls -ld /etc/cups/ppd
$ ls -ld /etc/cups

the log suggests the ppd file is not accessible to the process

[Stefano Dall'Agata (essedia1960)]

No one driver work

~$ ls -l /etc/cups/ppd/DeskJet-3630.ppd
ls: impossibile accedere a '/etc/cups/ppd/DeskJet-3630.ppd': File o directory non esistente

~$ ls -ld /etc/cups/ppd
drwxr-xr-x 2 root lp 4096 mag 18 10:47 /etc/cups/ppd

:~$ ls -ld /etc/cups
drwxr-xr-x 5 root lp 4096 mag 18 10:50 /etc/cups

~$ ls -l /etc/cups/ppd/HP_DeskJet_3630_series.ppd.O
-rw-r----- 1 root lp 31205 mag 18 10:46 /etc/cups/ppd/HP_DeskJet_3630_series.ppd.O

[Stefano Dall'Agata (essedia1960)]

Screen of Hplip

[Stefano Dall'Agata (essedia1960)]

In the properties window of the printer connected as USB it indicates the absence of an HP file, on test printing with network installation the printer does not report an error, but does not connect.

Inattiva - Il file "/usr/lib/cups/backend/hp" non è disponibile: No such file or directory

[Sebastien Bacher (seb128)]

Till, could you investigate the issue?

[Till Kamppeter (till-kamppeter)]

Is the hplip package installed on your system?

[Till Kamppeter (till-kamppeter)]

Please run the command

dpkg -l | grep hplip

and post the output here.

Also did you ever try to install HPLIP from the upstream site? Did you ever try to remove such an installation?

[Stefano Dall'Agata (essedia1960)]

I did tests with both Hplip installed as .snap and command line and from upstream site.

~$ dpkg -l | grep hplip
ii hplip 3.20.3+dfsg0-2 amd64 HP Linux Printing and Imaging System (HPLIP)
ii hplip-data 3.20.3+dfsg0-2 all HP Linux Printing and Imaging - data files

How can I possibly remove that from the upstream site?

[Till Kamppeter (till-kamppeter)]

Where did you get a .snap from HPLIP?

[Stefano Dall'Agata (essedia1960)]

From software center

[Tomáš Levora (tommyq)]

It looks like the problem I've got since upgrade to 20.04. Had the permission warning to the ppd file as well, but tried to add user to lp group. Here's the current output of my hp-check:

hp-check[15036]: info: :
hp-check[15036]: info: :HP Linux Imaging and Printing System (ver. 3.20.5)
hp-check[15036]: info: :Dependency/Version Check Utility ver. 15.1
hp-check[15036]: info: :
hp-check[15036]: info: :Copyright (c) 2001-18 HP Development Company, LP
hp-check[15036]: info: :This software comes with ABSOLUTELY NO WARRANTY.
hp-check[15036]: info: :This is free software, and you are welcome to distribute it
hp-check[15036]: info: :under certain conditions. See COPYING file for more details.
hp-check[15036]: info: :
hp-check[15036]: info: :Note: hp-check can be run in three modes:
hp-check[15036]: info: :1. Compile-time check mode (-c or --compile): Use this mode before compiling the HPLIP supplied tarball (.tar.gz or .run) to determine if the proper dependencies are installed to successfully compile HPLIP.
hp-check[15036]: info: :2. Run-time check mode (-r or --run): Use this mode to determine if a distro supplied package (.deb, .rpm, etc) or an already built HPLIP supplied tarball has the proper dependencies installed to successfully run.
hp-check[15036]: info: :3. Both compile- and run-time check mode (-b or --both) (Default): This mode will check both of the above cases (both compile- and run-time dependencies).
hp-check[15036]: info: :
hp-check[15036]: info: :Check types:
hp-check[15036]: info: :a. EXTERNALDEP - External Dependencies
hp-check[15036]: info: :b. GENERALDEP - General Dependencies (required both at compile and run time)
hp-check[15036]: info: :c. COMPILEDEP - Compile time Dependencies
hp-check[15036]: info: :d. [All are run-time checks]
hp-check[15036]: info: :PYEXT SCANCONF QUEUES PERMISSION ...

[Tomáš Levora (tommyq)]

Just to add more info, I tried the one from distribution repository and the upstream one with the same result

[Till Kamppeter (till-kamppeter)]

On the machine where you still have the problem could you remove your print queue and then unplug and re-plug the printer? Does a new print queue get automatically created?

What is the output of the following commands and post the output here:

lpstat -v
driverless
ps auxwww | grep ippusbxd

If a queue actually got auto-created for your printer, couls you attach the queue's PPD file from /etc/cups/ppd/ here?

[Stefano Dall'Agata (essedia1960)]

You can remove the print queue (cancel the job) and then disconnect and reconnect the printer.
A new print queue is not automatically recreated.

~$ lpstat -v
dispositivo per DeskJet_3630: hp:/usb/DeskJet_3630_series?serial=CN8AM7H3230658
dispositivo per HP_DeskJet_3630_series: dnssd://HP%20DeskJet%203630%20series%20%5B9B20BB%5D._ipp._tcp.local/?uuid=1c852a4d-b800-1f08-abcd-f439099b20bb

~$ driverless
ipp://DeskJet%203630%20series%20%5BCN8AM7H3230658%5D._ipp._tcp.local/
ipp://HP%20DeskJet%203630%20series%20%5B9B20BB%5D._ipp._tcp.local/

~$ ps auxwww | grep ippusbxd
root 72414 0.0 0.0 565272 5712 ? Sl 22:10 0:00 /usr/sbin/ippusbxd --bus-device 001:009 --from-port 60000 --logging
stefano 72551 0.0 0.0 19756 760 pts/0 S+ 22:13 0:00 grep --color=auto ippusbxd

[Till Kamppeter (till-kamppeter)]

Please

- Remove the .snap of HPLIP, it is experimental

- Remove any HPLIP version installed directly from HP

- Re-install Ubuntu's HPLIP via the command:

  sudo apt install --reinstall printer-driver-hpcups printer-driver-postscript-hp libsane-hpaio hplip-gui hplip hplip-data libhpmud0

  Please post the output of this command here.

- Remove your current print queues with the commands:

  lpadmin -x DeskJet_3630
  lpadmin -x HP_DeskJet_3630_series

- Unplug the printer from USB and re-plug it. Does a new print queue get created ("lpstat -v" should show it)? Can you print using this queue?

- Could you create a driverless print queue (this queue does not use HPLIP but common, manufacturer-independent communication protocols of the printer)? Use the command

  lpadmin -p DJ3630 -E -v ipp://HP%20DeskJet%203630%20series%20%5B9B20BB%5D._ipp._tcp.local/ -m everywhere

  Can you print with this print queue?

[Stefano Dall'Agata (essedia1960)]

~$ sudo apt install --reinstall printer-driver-hpcups printer-driver-postscript-hp libsane-hpaio hplip-gui hplip hplip-data libhpmud0
Lettura elenco dei pacchetti... Fatto
Generazione albero delle dipendenze
Lettura informazioni sullo stato... Fatto
Pacchetti suggeriti:
  hplip-doc
I seguenti pacchetti NUOVI saranno installati:
  hplip hplip-data hplip-gui libsane-hpaio printer-driver-postscript-hp
0 aggiornati, 5 installati, 2 reinstallati, 0 da rimuovere e 25 non aggiornati.
È necessario scaricare 1.122 kB/8.271 kB di archivi.
Dopo quest'operazione, verranno occupati 14,3 MB di spazio su disco.
Scaricamento di:1 http://it.archive.ubuntu.com/ubuntu focal/main amd64 printer-driver-postscript-hp amd64 3.20.3+dfsg0-2 [1.122 kB]
Recuperati 1.122 kB in 1s (2.204 kB/s)
Selezionato il pacchetto hplip-data non precedentemente selezionato.
(Lettura del database... 226807 file e directory attualmente installati.)
Preparativi per estrarre .../0-hplip-data_3.20.3+dfsg0-2_all.deb...
Estrazione di hplip-data (3.20.3+dfsg0-2)...
Selezionato il pacchetto libsane-hpaio:amd64 non precedentemente selezionato.
Preparativi per estrarre .../1-libsane-hpaio_3.20.3+dfsg0-2_amd64.deb...
Estrazione di libsane-hpaio:amd64 (3.20.3+dfsg0-2)...
Selezionato il pacchetto hplip non precedentemente selezionato.
Preparativi per estrarre .../2-hplip_3.20.3+dfsg0-2_amd64.deb...
Estrazione di hplip (3.20.3+dfsg0-2)...
Selezionato il pacchetto hplip-gui non precedentemente selezionato.
Preparativi per estrarre .../3-hplip-gui_3.20.3+dfsg0-2_all.deb...
Estrazione di hplip-gui (3.20.3+dfsg0-2)...
Preparativi per estrarre .../4-libhpmud0_3.20.3+dfsg0-2_amd64.deb...
Estrazione di libhpmud0:amd64 (3.20.3+dfsg0-2) su (3.20.3+dfsg0-2)...
Preparativi per estrarre .../5-printer-driver-hpcups_3.20.3+dfsg0-2_amd64.deb...
Estrazione di printer-driver-hpcups (3.20.3+dfsg0-2) su (3.20.3+dfsg0-2)...
Selezionato il pacchetto printer-driver-postscript-hp non precedentemente selezi
onato.
Preparativi per estrarre .../6-printer-driver-postscript-hp_3.20.3+dfsg0-2_amd64
.deb...
Estrazione di printer-driver-postscript-hp (3.20.3+dfsg0-2)...
Configurazione di hplip-data (3.20.3+dfsg0-2)...
Configurazione di printer-driver-postscript-hp (3.20.3+dfsg0-2)...
Configurazione di libhpmud0:amd64 (3.20.3+dfsg0-2)...
Configurazione di libsane-hpaio:amd64 (3.20.3+dfsg0-2)...
Configurazione di printer-driver-hpcups (3.20.3+dfsg0-2)...
Configurazione di hplip (3.20.3+dfsg0-2)...
Creating/updating hplip user account...
Configurazione di hplip-gui (3.20.3+dfsg0-2)...
Elaborazione dei trigger per bamfdaemon (0.5.3+18.04.20180207.2-0ubuntu2)...
Rebuilding /usr/share/applications/bamf-2.index...
Elaborazione dei trigger per desktop-file-utils (0.24-1ubuntu2)...
Elaborazione dei trigger per mime-support (3.64ubuntu1)...
Elaborazione dei trigger per cups (2.3.1-9ubuntu1.1)...
Elaborazione dei trigger per gnome-menus (3.36.0-1ubuntu1)...
Elaborazione dei trigger per libc-bin (2.31-0ubuntu9)...
Elaborazione dei trigger per man-db (2.9.1-1)...
Elaborazione dei trigger per dbus (1.12.16-2ubuntu2)...

stefano@stefano-Lenovo-G50-30:~$ lpadmin -x DeskJet_3630
stefano@stefano-Lenovo-G50-30:~$ lpadmin -x...

[Till Kamppeter (till-kamppeter)]

Could you try:

lpadmin -p DJ3630 -E -v ipp://DeskJet%203630%20series%20%5BCN8AM7H3230658%5D._ipp._tcp.local/ -m everywhere

[Stefano Dall'Agata (essedia1960)]

stefano@stefano-Lenovo-G50-30:~$ lpadmin -p DJ3630 -E -v ipp://DeskJet%203630%20series%20%5BCN8AM7H3230658%5D._ipp._tcp.local/ -m everywhere
lpadmin: Unable to connect to "stefano-Lenovo-G50-30.local:60000": Argomento non valido

[Stefano Dall'Agata (essedia1960)]

I tried installing a printer via GUI after the last suggested commands.
Then I gave the commands:

~$ ls -l /var/log/cups/*
-rw-r----- 1 root adm 5058 mag 22 21:37 /var/log/cups/access_log
-rw-r----- 1 root adm 1962 mag 20 00:00 /var/log/cups/access_log.1
-rw-r----- 1 root adm 7883 mag 18 22:52 /var/log/cups/access_log.2.gz
-rw-r----- 1 root adm 642 mag 22 21:36 /var/log/cups/error_log
-rw-r----- 1 root adm 458 mag 20 00:00 /var/log/cups/error_log.1
-rw-r----- 1 root adm 2352 mag 18 18:53 /var/log/cups/error_log.2.gz

~$ lpinfo -v
file cups-brf:/
network beh
network ipps
network ipp
network socket
network lpd
network https
direct hp:/usb/DeskJet_3630_series?serial=CN8AM7H3230658
serial serial:/dev/ttyS0?baud=115200
network http
direct hpfax
network dnssd://HP%20DeskJet%203630%20series%20%5B9B20BB%5D._ipp._tcp.local/?uuid=1c852a4d-b800-1f08-abcd-f439099b20bb
network socket://192.168.1.249:9100
network ipp://HP%20DeskJet%203630%20series%20%5B9B20BB%5D._ipp._tcp.local/

[Till Kamppeter (till-kamppeter)]

Could you try

lpadmin -p DJ3630 -E -v ipp://localhost:60000/ipp/print -m everywhere

[Stefano Dall'Agata (essedia1960)]

~$ lpadmin -p DJ3630 -E -v ipp://localhost:60000/ipp/print -m everywhere
lpadmin: Unable to query printer: Successo

[Stefano Dall'Agata (essedia1960)]

It seems to me that in this discussion from the Ubuntu Mate forum there is a similar problem:
https://ubuntu-mate.community/t/hplip-missing-files/21782

[Till Kamppeter (till-kamppeter)]

Stefano, thanks for the Mate forum link, I have tried to make up the sum of the tips to help users get HPLIP working again.

So anyone here, please try to clean up any HPLIP mess on your system using the following steps:

1. Remove HPLIP deb-packages

sudo dpkg -P --force-depends hplip hplip-data hplip-doc hplip-gui \
libsane-hpaio printer-driver-hpcups printer-driver-hpijs printer-driver-postscript-hp \
hpijs-ppds libhpmud0

2. Remove upstream-installed HPLIP using HPLIP binary uninstaller

wget https://nchc.dl.sourceforge.net/project/hplip/hplip/3.20.3/hplip-3.20.3.run
sh hplip-3.20.3.run --noexec
cd hplip-3.20.3
sudo python3 ./uninstall.py
sudo rm -rf /usr/share/hplip/

3. Reinstall deb-packages with:

sudo apt install -f hplip-gui printer-driver-hpcups printer-driver-postscript-hp libsane-hpaio

Then try to create a print queue with hp-setup and, if needed load the proprietary plugin with hp-plugin. Also printer setup with GNOME Control Center or system-config-printer should work again.

DO NOT install printer-driver-hpijs and hpijs-ppds. These packages are deprecated and not maintained any more, and they also have no benefit compared to printer-driver-hpcups.

[Stefano Dall'Agata (essedia1960)]

The printer still does not work.

stefano@stefano-Lenovo-G50-30:~$ sudo dpkg -P --force-depends hplip hplip-data hplip-doc hplip-gui \
> libsane-hpaio printer-driver-hpcups printer-driver-hpijs printer-driver-postscript-hp \
> hpijs-ppds libhpmud0
[sudo] password di stefano:
(Lettura del database... 227442 file e directory attualmente installati.)
Rimozione di hplip (3.20.3+dfsg0-2)...
Eliminazione dei file di configurazione di hplip (3.20.3+dfsg0-2)...
Rimozione di hplip-data (3.20.3+dfsg0-2)...
dpkg: attenzione: nel rimuovere hplip-data, la directory "/usr/share/hplip/ui5" è risultata non vuota e non viene rimossa
dpkg: attenzione: nel rimuovere hplip-data, la directory "/usr/share/hplip/scan" è risultata non vuota e non viene rimossa
dpkg: attenzione: nel rimuovere hplip-data, la directory "/usr/share/hplip/prnt" è risultata non vuota e non viene rimossa
dpkg: attenzione: nel rimuovere hplip-data, la directory "/usr/share/hplip/pcard" è risultata non vuota e non viene rimossa
dpkg: attenzione: nel rimuovere hplip-data, la directory "/usr/share/hplip/installer" è risultata non vuota e non viene rimossa
dpkg: attenzione: nel rimuovere hplip-data, la directory "/usr/share/hplip/fax" è risultata non vuota e non viene rimossa
dpkg: attenzione: nel rimuovere hplip-data, la directory "/usr/share/hplip/copier" è risultata non vuota e non viene rimossa
dpkg: attenzione: nel rimuovere hplip-data, la directory "/usr/share/hplip/base/pexpect" è risultata non vuota e non viene rimossa
dpkg: attenzione: viene ignorata la richiesta di rimuovere hplip-doc poiché non è installato
Eliminazione dei file di configurazione di hplip-gui (3.20.3+dfsg0-2)...
Rimozione di libsane-hpaio:amd64 (3.20.3+dfsg0-2)...
Eliminazione dei file di configurazione di libsane-hpaio:amd64 (3.20.3+dfsg0-2)...
dpkg: attenzione: nel rimuovere libsane-hpaio:amd64, la directory "/usr/share/hplip" è risultata non vuota e non viene rimossa
Rimozione di printer-driver-hpcups (3.20.3+dfsg0-2)...
dpkg: attenzione: viene ignorata la richiesta di rimuovere printer-driver-hpijs poiché non è installato
Rimozione di printer-driver-postscript-hp (3.20.3+dfsg0-2)...
dpkg: attenzione: viene ignorata la richiesta di rimuovere hpijs-ppds poiché non è installato
Rimozione di libhpmud0:amd64 (3.20.3+dfsg0-2)...
Elaborazione dei trigger per man-db (2.9.1-1)...
Elaborazione dei trigger per dbus (1.12.16-2ubuntu2)...
Elaborazione dei trigger per cups (2.3.1-9ubuntu1.1)...
Elaborazione dei trigger per libc-bin (2.31-0ubuntu9)...
stefano@stefano-Lenovo-G50-30:~$ wget https://nchc.dl.sourceforge.net/project/hplip/hplip/3.20.3/hplip-3.20.3.run
--2020-05-26 05:58:02-- https://nchc.dl.sourceforge.net/project/hplip/hplip/3.20.3/hplip-3.20.3.run
Risoluzione di nchc.dl.sourceforge.net (nchc.dl.sourceforge.net)... 140.110.96.69, 2001:e10:ffff:1f02::17
Connessione a nchc.dl.sourceforge.net (nchc.dl.sourceforge.net)|140.110.96.69|:443... connesso.
Richiesta HTTP inviata, in attesa di risposta... 200 OK
Lunghezza: 25724602 (25M) [application/x-makeself]
Salvataggio in: "hplip-3.20.3.run"

hplip-3.20.3.run 100%[===================>] 24,53M 5,05MB/s in 7,6s

2020-05-26 05:58:12 (3,25 MB/s) - "hplip-3.20.3...

[Manfred Hampl (m-hampl)]

Ubuntu 20.04 needs
- either the HPLIP version 3.20.3+dfsg0-2 packages from the Ubuntu repositories
- or HPLIP version 3.20.5 (or higher) from the HPLIP pages

Version 3.20.3 from the HPLIP pages does not work.

[Stefano Dall'Agata (essedia1960)]

I tried reinstalling from hplip-3.20.5.run, I am attaching the errors in the attached images.

[Karl Meyer (karl34)]

I managed to get my printer back to work in 20.04 by installing hplip from ubuntu repo (3.20.3+dfsg0-2), and then following this hint to install the hp-plugin:

https://askubuntu.com/a/1248018

I had to type "cont" and press return after the depicted command to start the process.

[Stefano Dall'Agata (essedia1960)]

I tried to follow the proposed advice, but the installation process loops.

-----------------------------------------
| PLUG-IN INSTALLATION FOR HPLIP 3.20.3 |
-----------------------------------------

The driver plugin for HPLIP 3.20.3 appears to already be installed.
Do you wish to download and re-install the plug-in? (y=yes*, n=no, q=quit) ? n
hp-plugin[5778]: debug: Unlocking: /home/stefano/.hplip/hp-plugin.lock
The program exited via sys.exit(). Exit status: 0
> /usr/share/hplip/plugin.py(23)<module>()
-> __version__ = '2.1'
(Pdb) cont

(Note: Defaults for each question are maked with a '*'. Press <enter> to accept the default.)

-----------------------------------------
| PLUG-IN INSTALLATION FOR HPLIP 3.20.3 |
-----------------------------------------

The driver plugin for HPLIP 3.20.3 appears to already be installed.
Do you wish to download and re-install the plug-in? (y=yes*, n=no, q=quit) ?

[Stephen (3rdrockstephen)]

****sudo apt purge ippusbxd **** worked for me (after I tried lots)

Thx to Brian in
https://answers.launchpad.net/hplip/+question/691227

[Stefano Dall'Agata (essedia1960)]

Thanks Stephen (good name) :)
it's work, USB & wifi

[Bjornar-si (bjornar-si)]

This bug also affects me -but it might be a separate bug?
I have a HP Color Laser Jet PRO MFP M281fdw. After upgrading from Ubuntu 18.04 LTS to 20.04 LTS the printer is not responding, scanning cannot start. I have tried with HPLIP ver.3.20.5 from HP. The installation stops after this section

(...)
DEPENDENCY AND CONFLICT RESOLUTION
----------------------------------
Running 'sudo apt-get install --assume-yes gtk2-engines-pixbuf'
Please wait, this may take several minutes...
Running 'sudo apt-get install --assume-yes python-pyqt5'
Please wait, this may take several minutes...
error: Command failed. Re-try #1...
Running 'sudo apt-get install --assume-yes python-pyqt5'
Please wait, this may take several minutes...
error: Command failed. Re-try #2...
Running 'sudo apt-get install --assume-yes python-pyqt5'
Please wait, this may take several minutes...
error: Command failed. Re-try #3...
Running 'sudo apt-get install --assume-yes python-pyqt5'
Please wait, this may take several minutes...
error: Package install command failed with error code 100
Would you like to retry installing the missing package(s) (y=yes*, n=no, q=quit)
(...)

I'm attaching the installation log

[and003 (and03)]

I believe this bug affects me, also, but I have a different printer, and I get a different message. I have posted my issue here:

https://bugs.launchpad.net/hplip/+bug/1884084

[knorre (knorre)]

It might be that the same bug affected me after upgrading to 20.04 with another printer: https://answers.launchpad.net/hplip/+question/690767

I also recently tried hplip 3.20.6 for a freshly installed xubuntu, but it did not help. (the result of hp-check brought the same result as https://answers.launchpad.net/hplip/+question/690767 (#5). I was forced to downgrade the system again because it is essential to keep the printer functional.

[Bernard Decock (decockbernard)]

After sudo apt purge ippusbxd and rebooting, I was able to print and scan with HP Deskjet 3639

[Rodney Graff (scorchgd)]

I have similar problems. See: https://answers.launchpad.net/hplip/+question/692399

Running the latest version of Kubuntu and just tried to install brand new HP think tank 551 MFP.

Does involve similar warnings from print doctor saying it cannot access some files.

| PERMISSION |
--------------

USB Smart_Tank_Plus_550 Required - - OK Node:'/dev/bus/usb/003/002' Perm:' root lp rw- rw- rw- rw- r--'

Checking Permissions....

Checking for Configured Queues....
warning: Fail to read ppd=/etc/cups/ppd/Smart_Tank_Plus_550.ppd file
warning: Insufficient permission to access file /etc/cups/ppd/Smart_Tank_Plus_550.ppd
warning: Could not complete Queue(s) configuration check

Checking for HP Properitery Plugin's....
No plug-in printers are configured.

Diagnose completed... "

Is this entire issue due to a problem with folder permissions preventing an application or driver from accessing needed folders or files?

Please respond.

Kindest regards;
Scorch.

[Rodney Graff (scorchgd)]

Did confirm the print doctor warning.

Some of the files it is trying to access are in fact locked.

Do not know why or if this makes any difference for actually using the printer or scanner.

Kindest regards; Scorch.

[Launchpad Janitor (janitor)]

[Expired for hplip (Ubuntu) because there has been no activity for 60 days.]

[Alain Baeckeroot (alain-baeckeroot)]

The bug is present for 3 different HP printers ,
via Wifi or via USB

It worked nicely , and began to fail maybe one month ago (near february / march 2021)

I guess some upgrade messed-up the printers.