Your message dated Fri, 5 Jun 2026 17:02:13 +0000 (UTC)
with message-id <[email protected]>
and subject line missing external plugin available
has caused the Debian Bug report #1138203,
regarding hplip: Scanner failure on HP LaserJet MFP 234d after HPLIP update to
3.26.4
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1138203: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1138203
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: hplip
Version: 3.22.10+dfsg0-8.1
Severity: normal
X-Debbugs-Cc: [email protected]
Dear Maintainer,
I am writing to report a regression in Debian Unstable affecting the scanner
functionality of my HP LaserJet MFP 234d. The issue appeared immediately
following an automatic system upgrade of HPLIP-related packages.
While the printing function continues to work correctly, all scanning
applications (simple-scan, hp-scan) have stopped functioning.
Technical Details:
The problem occurs when updating the following packages from version
3.22.10+dfsg0-8.1 to 3.26.4+dfsg0-1:
- hpijs-ppds
- hplip / hplip-data
- libhpmud0:amd64
- libsane-hpaio:amd64
- printer-driver-hpcups
- printer-driver-hpijs
- printer-driver-postscript-hp
Error Logs:
*) simple-scan fails with the following errors in journalctl:
- unable to load library libm.so: /lib/x86_64-linux-gnu/libm.so:
invalid ELF
header
- Plugin version[3.22.10] mismatch with HPLIP version[3.26.4]
- Plugin version is not matching
*) hp-scan returns the error:
- "Error during device I/O (code=9)"
Workaround:
I have verified that downgrading to the previous version (3.22.10+dfsg0-8.1)
resolves the issue completely. To restore functionality, I manually
installed
the .deb files from Debian Snapshot and placed them on hold using apt-mark
hold.
It appears there is a compatibility issue or a plugin mismatch introduced in
version 3.26.4 regarding the scanner libraries (specifically libsane-hpaio).
I hope this report helps in identifying the cause of the regression.
Best regards,
Antonio
-- Package-specific info:
---------------
| SYSTEM INFO |
---------------
Kernel: 7.0.10-1-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix
7.0-11.1~sid (2026-05-23) GNU/Linux
Host: SAT
Proc: 7.0.10-1-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix 7.0-11.1~sid
(2026-05-23) GNU/Linux
Distribution: debian n/a
Bitness: 64 bit
-----------------------
| HPLIP CONFIGURATION |
-----------------------
HPLIP-Version: HPLIP 3.22.10
HPLIP-Home: /usr/share/hplip
warning: HPLIP-Installation: Auto installation is not supported for
debian distro n/a version
Current contents of '/etc/hp/hplip.conf' file:
# hplip.conf. Generated from hplip.conf.in by configure.
[hplip]
version=3.22.10
[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/hplip/HP
ppdbase=/usr/share/ppd/hplip
doc=/usr/share/doc/hplip
html=/usr/share/doc/hplip-doc
icon=no
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv
bin=/usr/bin
apparmor=/etc/apparmor.d
# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
libusb01-build=no
pp-build=no
gui-build=yes
scanner-build=yes
fax-build=yes
dbus-build=yes
cups11-build=no
doc-build=yes
shadow-build=no
hpijs-install=yes
foomatic-drv-install=yes
foomatic-ppd-install=no
foomatic-rip-hplip-install=no
hpcups-install=yes
cups-drv-install=yes
cups-ppd-install=no
internal-tag=3.22.10
restricted-build=no
ui-toolkit=qt5
qt3=no
qt4=no
qt5=yes
policy-kit=yes
lite-build=no
udev_sysfs_rules=no
hpcups-only-build=no
hpijs-only-build=no
apparmor_build=no
class-driver=no
Current contents of '/var/lib/hp/hplip.state' file:
[plugin]
installed = 1
eula = 1
version = 3.22.10
Current contents of '~/.hplip/hplip.conf' file:
[commands]
scan=/usr/local/bin/simple-scan %SANE_URI%
[fax]
email_address=
voice_phone=
[last_used]
device_uri="hp:/usb/HP_LaserJet_MFP_M232-M237?serial=VNPZX02210"
printer_name=
working_dir=.
[polling]
device_list=
enable=false
interval=5
[refresh]
enable=false
rate=30
type=1
[settings]
systray_messages=0
systray_visible=0
[upgrade]
last_upgraded_time=1762715354
notify_upgrade=false
pending_upgrade_time=0
<Package-name> <Package-Desc> <Required/Optional> <Min-Version>
<Installed-Version> <Status> <Comment>
-------------------------
| External Dependencies |
-------------------------
error: cups CUPS - Common Unix Printing System
REQUIRED 1.1 - INCOMPAT 'CUPS may not be
installed or not running'
gs GhostScript - PostScript and PDF language
interpreter and previewer REQUIRED 7.05 10.07.1 OK -
xsane xsane - Graphical scanner frontend for SANE
OPTIONAL 0.9 0.999 OK -
scanimage scanimage - Shell scanning program
OPTIONAL 1.0 1.2.1 OK -
dbus DBus - Message bus system
REQUIRED - 1.16.2 OK -
policykit PolicyKit - Administrative policy framework
OPTIONAL - - OK -
network network -wget OPTIONAL
- 1.25.0 OK -
error: avahi-utils avahi-utils OPTIONAL -
- MISSING 'avahi-utils needs to be installed'
------------------------
| General Dependencies |
------------------------
libjpeg libjpeg - JPEG library
REQUIRED - - OK -
cups-devel CUPS devel- Common Unix Printing System
development files REQUIRED - - OK -
cups-image CUPS image - CUPS image development files
REQUIRED - - OK -
libpthread libpthread - POSIX threads library
REQUIRED - b'2.42' OK -
libusb libusb - USB library REQUIRED
- 1.0 OK -
sane SANE - Scanning library
REQUIRED - - OK -
sane-devel SANE - Scanning library development files
REQUIRED - - OK -
libavahi-dev libavahi-dev REQUIRED
- - OK -
libnetsnmp-devel libnetsnmp-devel - SNMP networking library
development files REQUIRED 5.0.9 5.9.5 OK -
libcrypto libcrypto - OpenSSL cryptographic library
REQUIRED - 3.6.2 OK -
python3X Python 2.2 or greater - Python programming
language REQUIRED 2.2 3.13.12 OK -
python3-notify2 Python libnotify - Python bindings for the
libnotify Desktop notifications OPTIONAL - - OK
-
error: python3-pyqt4-dbus PyQt 4 DBus - DBus Support for PyQt4
OPTIONAL 4.0 - MISSING
'python3-pyqt4-dbus needs to be installed'
error: python3-pyqt4 PyQt 4- Qt interface for Python (for Qt version
4.x) REQUIRED 4.0 - MISSING
'python3-pyqt4 needs to be installed'
python3-dbus Python DBus - Python bindings for DBus
REQUIRED 0.80.0 1.4.0 OK -
python3-xml Python XML libraries REQUIRED
- 2.8.1 OK -
python3-devel Python devel - Python development files
REQUIRED 2.2 3.13.12 OK -
python3-pil PIL - Python Imaging Library (required for
commandline scanning with hp-scan) OPTIONAL - 12.2.0
OK -
python3-reportlab Reportlab - PDF library for Python
OPTIONAL 2.0 4.5.1 OK -
--------------
| COMPILEDEP |
--------------
libtool libtool - Library building support services
REQUIRED - 2.5.4 OK -
gcc gcc - GNU Project C and C++ Compiler
REQUIRED - 15.2.0 OK -
make make - GNU make utility to maintain groups of
programs REQUIRED 3.0 4.4.1 OK -
---------------------
| Python Extentions |
---------------------
cupsext CUPS-Extension REQUIRED
- 3.22.10 OK -
hpmudext IO-Extension REQUIRED
- 3.22.10 OK -
----------------------
| Scan Configuration |
----------------------
hpaio HPLIP-SANE-Backend REQUIRED
- 3.22.10 OK 'hpaio found in
/etc/sane.d/dll.conf'
scanext Scan-SANE-Extension REQUIRED
- 3.22.10 OK -
------------------------------
| DISCOVERED SCANNER DEVICES |
------------------------------
No Scanner found.
--------------------------
| DISCOVERED USB DEVICES |
--------------------------
No devices found.
---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------
HP-MPF-M234D
------------
Type: Unknown
Device URI: usb://HP/LaserJet%20MFP%20M232-M237?serial=VNPZX02210
PPD: /etc/cups/ppd/HP-MPF-M234D.ppd
PPD Description: HP LaserJet MFP m232-m237, hpcups 3.22.10
Printer status: printer HP-MPF-M234D is idle. enabled since Fri May 15
07:47:34 2026
warning: Printer is not HPLIP installed. Printers must use the hp: or
hpfax: CUPS backend for HP-Devices.
-----------
| SUMMARY |
-----------
Missing Required Dependencies
-----------------------------
error: 'cups' package is missing or 'cups' service is not running.
error: 'libcups2' package is missing/incompatible
error: 'python3-pyqt4' package is missing/incompatible
error: 'gtk2-engines-pixbuf' package is missing/incompatible
Missing Optional Dependencies
-----------------------------
error: 'avahi-utils' package is missing/incompatible
error: 'python3-dbus.mainloop.qt' package is missing/incompatible
Total Errors: 4
Total Warnings: 3
Done.
-- System Information:
Debian Release: forky/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 7.0.10-1-liquorix-amd64 (SMP w/32 CPU threads; PREEMPT)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE=it
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages hplip depends on:
ii adduser 3.155
ii cups 2.4.18-1
hi hplip-data 3.22.10+dfsg0-8.1
ii libc6 2.42-16
ii libcups2t64 2.4.18-1
ii libdbus-1-3 1.16.2-5
hi libhpmud0 3.22.10+dfsg0-8.1
ii libpython3.13 3.13.12-1
hi libsane-hpaio 3.22.10+dfsg0-8.1
ii libsane1 1.4.0-1+b1
ii lsb-base 11.6
hi printer-driver-hpcups 3.22.10+dfsg0-8.1
ii python3 3.13.9-3+b1
ii python3-dbus 1.4.0-1+b1
ii python3-gi 3.56.3-1
ii python3-pexpect 4.9-4
ii python3-pil 12.2.0-1
ii python3-reportlab 4.5.1-1
ii sysvinit-utils [lsb-base] 3.18-1
ii wget 1.25.0-2
ii xz-utils 5.8.3-1
Versions of packages hplip recommends:
pn avahi-daemon <none>
ii pkexec 127-3
ii polkitd 127-3
hi printer-driver-postscript-hp 3.22.10+dfsg0-8.1
ii sane-utils 1.4.0-1+b1
Versions of packages hplip suggests:
pn hplip-doc <none>
pn hplip-gui <none>
ii python3-notify2 0.3.1-2
pn system-config-printer <none>
-- no debconf information
--- End Message ---
--- Begin Message ---
Thanks to Till the missing external plugin has been uploaded now, so
manually closing this bug.
Thorsten
--- End Message ---
