HPLIP

Debian Linux does not detect HP 4100 Deskjet scanner

Asked by Alberto Costa on 2020-11-29

Good morning.
I have issues properly installing my new HP Deskjet printer with the distribution provided driver (the newest HPLIP driver can not be installed, it gives me a MD5 checksum error, but this is another topic). HPLIP does not recognise the scanner.

Here are the detail of my distribution:
uname -a
Linux alberto-pc 4.19.0-12-amd64 #1 SMP Debian 4.19.152-1 (2020-10-18) x86_64 GNU/Linux

and here is the hp-check -t output:
Saving output in log file: /var/log/hp-check.log

HP Linux Imaging and Printing System (ver. 3.18.12)
Dependency/Version Check Utility ver. 15.1

Copyright (c) 2001-15 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

Note: hp-check can be run in three modes:
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.
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.
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).

Check types:
a. EXTERNALDEP - External Dependencies
b. GENERALDEP - General Dependencies (required both at compile and run time)
c. COMPILEDEP - Compile time Dependencies
d. [All are run-time checks]
PYEXT SCANCONF QUEUES PERMISSION

Status Types:
    OK
    MISSING - Missing Dependency or Permission or Plug-in
    INCOMPAT - Incompatible dependency-version or Plugin-version

\Traceback (most recent call last):
File "/usr/share/hplip/base/utils.py", line 265, in walkFiles
names = os.listdir(root)
FileNotFoundError: [Errno 2] No such file or directory: '/etc/PolicyKit'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/share/hplip/base/utils.py", line 267, in walkFiles
raise StopIteration
StopIteration

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/bin/hp-check", line 861, in <module>
    dep.core.init()
  File "/usr/share/hplip/installer/core_install.py", line 527, in init
    self.check_dependencies(callback)
  File "/usr/share/hplip/installer/core_install.py", line 620, in check_dependencies
    self.have_dependencies[d] = self.dependencies[d][3]()
  File "/usr/share/hplip/installer/core_install.py", line 1241, in check_policykit
    if check_file('PolicyKit.conf', "/etc/PolicyKit") and check_file('org.gnome.PolicyKit.AuthorizationManager.service', "/usr/share/dbus-1/services"):
  File "/usr/share/hplip/installer/dcheck.py", line 107, in check_file
    for w in utils.walkFiles(dir, recurse=True, abs_paths=True, return_folders=False, pattern=f):
RuntimeError: generator raised StopIteration

If I run sane-find-scanner I have the following output:

# sane-find-scanner will now attempt to detect your scanner. If the
# result is different from what you expected, first make sure your
# scanner is powered up and properly connected to your computer.

# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a kernel SCSI driver for your SCSI adapter.

found USB scanner (vendor=0x03f0 [HP], product=0x1953 [DeskJet Plus 4100 series]) at libusb:002:009
could not fetch string descriptor: Pipe error
could not fetch string descriptor: Pipe error
# Your USB scanner was (probably) detected. It may or may not be supported by
# SANE. Try scanimage -L and read the backend's manpage.

# Not checking for parallel port scanners.

# Most Scanners connected to the parallel port or other proprietary ports
# can't be detected by this program.

but when I use sane scanner or simple scan the scanner is not detected

typing
sudo scanimage -L

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).

The printer, instead, appears to work correcty

many thanks

Alberto Costa