I/O Error scanning with M1120n over network using HPLIP 3.9.4b

Everything looks okay. Can you run hp-check -t as user and post the output?

Also try running:

su -c "tail -f /var/log/syslog"

then try scanning and post the output in the syslog.

Thanks!

Aaron

Syslog output of `scanimage > image.pnm` (as root):

Sep 25 09:41:19 tweety kernel: [ 1165.720042] ppdev0: registered pardevice
Sep 25 09:41:19 tweety kernel: [ 1165.720042] ppdev0: unregistered pardevice
Sep 25 09:41:19 tweety kernel: [ 1165.823033] ppdev0: registered pardevice
Sep 25 09:41:19 tweety scanimage: io/hpmud/pp.c 627: unable to read device-id ret=-1
Sep 25 09:41:19 tweety kernel: [ 1165.872405] ppdev0: unregistered pardevice
Sep 25 09:41:21 tweety scanimage: scan/sane/marvell.c 66: unable to load restricted library: libhpmud.so: cannot open shared object file: No such file or directory

Output of `hp-check -t` (as user):

$ hp-check -t

HP Linux Imaging and Printing System (ver. 3.9.4b)
Dependency/Version Check Utility ver. 14.3

Copyright (c) 2001-9 Hewlett-Packard 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).

Saving output in log file: hp-check.log

Initializing. Please wait...

---------------
| SYSTEM INFO |
---------------

Basic system information:
Linux tweety 2.6.26-2-686 #1 SMP Fri Aug 14 01:27:18 UTC 2009 i686 GNU/Linux

Distribution:
debian 5.0.2

HPOJ running?
No, HPOJ is not running (OK).

Checking Python version...
OK, version 2.5.2 installed

Checking PyQt 4.x version...
OK, version 4.4.2 installed.

Checking for CUPS...
Status: scheduler is running
Version: 1.3.8
error_log is set to level: debug

Checking for dbus/python-dbus...
dbus daemon is running.
python-dbus version: 0.82.4

------------------------------------
| COMPILE AND RUNTIME DEPENDENCIES |
------------------------------------

note: To check for compile-time only dependencies, re-run hp-check with the -c parameter (ie, hp-check -c).
note: To check for run-time only dependencies, re-run hp-check with the -r parameter (ie, hp-check -r).

Checking for dependency: CUPS - Common Unix Printing System...
OK, found.

Checking for dependency: CUPS DDK - CUPS driver development kit...
OK, found.

Checking for dependency: CUPS devel- Common Unix Printing System development files...
OK, found.

Checking for dependency: CUPS image - CUPS image development files...
error: NOT FOUND! This is a REQUIRED/COMPILE TIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.

Checking for dependency: DBus - Message bus system...
OK, found.

Checking for dependency: gcc - GNU Project C and C++ Compiler...
OK, found.

Checking for dependency: GhostScript - PostScript and PDF language interpreter and previewer...
OK, found.

Checking for dependency: libcrypto - OpenSSL cryptographic library...
OK, found.

Checking for dependency: libjpeg - JPEG library...
OK, found.

Checking for dependency: libnetsnmp-devel - SNMP networking library development files...
OK, found.

Checking for dependency: libpthread - POSIX threads library...
OK, found.

Checking for dependency: libtool - Library building support services...
OK, found.

Checking for dependency: libusb - USB library...
OK, found.

Checking for dependency: make - GNU make utility to maintain groups of programs...
OK, found.

Checking for dependency: PIL - Python Imaging Library (required for commandline scanning with hp-scan)...
OK, found.

Checking for dependency: PolicyKit - Administrative policy framework...
warning: NOT FOUND! This is an OPTIONAL/RUNTIME ONLY dependency. Some HPLIP functionality may not function properly.

Checking for dependency: ppdev - Parallel port support kernel module....
OK, found.

Checking for dependency: PyQt 4 DBus - DBus Support for PyQt4...
error: NOT FOUND! This is a REQUIRED/RUNTIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.

Checking for dependency: Python ctypes - A foreign function library for Python...
OK, found.

Checking for dependency: Python DBus - Python bindings for DBus...
OK, found.

Checking for dependency: Python devel - Python development files...
OK, found.

Checking for dependency: Python XML libraries...
OK, found.

Checking for dependency: Python 2.3 or greater - Required for fax functionality...
OK, found.

Checking for dependency: Python 2.2 or greater - Python programming language...
OK, found.

Checking for dependency: Reportlab - PDF library for Python...
OK, found.

Checking for dependency: SANE - Scanning library...
OK, found.

Checking for dependency: SANE - Scanning library development files...
OK, found.

Checking for dependency: scanimage - Shell scanning program...
OK, found.

Checking for dependency: xsane - Graphical scanner frontend for SANE...
OK, found.

----------------------
| HPLIP INSTALLATION |
----------------------

Currently installed HPLIP version...
HPLIP 3.9.4b currently installed in '/usr/share/hplip'.

Current contents of '/etc/hp/hplip.conf' file:
# hplip.conf. Generated from hplip.conf.in by configure.

[hplip]
version=3.9.4b

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/hpijs/HP
ppdbase=/usr/share/ppd/hpijs
doc=/usr/share/doc/hplip-doc/HTML
icon=no
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv

# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
pp-build=yes
gui-build=yes
scanner-build=yes
fax-build=yes
dbus-build=yes
cups11-build=no
doc-build=yes
shadow-build=no
foomatic-drv-install=yes
foomatic-ppd-install=no
foomatic-rip-hplip-install=no
cups-ppd-install=no
cups-drv-install=yes
internal-tag=3.9.4b.10
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
policy-kit=yes

Current contents of '/var/lib/hp/hplip.state' file:
[plugin]
eula = 1
installed = 1

Current contents of '~/.hplip/hplip.conf' file:
[last_used]
device_uri = hp:/net/HP_LaserJet_M1120n_MFP?ip=192.168.1.3

[installation]
date_time = 09/25/09 09:43:15
version = 3.9.4b.10

-------------------------------
| DISCOVERED PARALLEL DEVICES |
-------------------------------

No devices found.

--------------------------
| DISCOVERED USB DEVICES |
--------------------------

No devices found.

---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------

HP_LaserJet_M1120n_MFP
----------------------
Type: Printer
Device URI: hp:/net/HP_LaserJet_M1120n_MFP?ip=192.168.1.7
PPD: /etc/cups/ppd/HP_LaserJet_M1120n_MFP.ppd
PPD Description: HP LaserJet M1120n Foomatic/hpijs-ZJS (recommended)
Printer status: printer HP_LaserJet_M1120n_MFP is idle. enabled since Thu 24 Sep 2009 12:38:04 PM CEST

HP Linux Imaging and Printing System (ver. 3.9.4b)
System Tray Status Service ver. 2.0

Copyright (c) 2001-9 Hewlett-Packard 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.

Required plug-in status: Installed
Communication status: Good

----------------------
| SANE CONFIGURATION |
----------------------

'hpaio' in '/etc/sane.d/dll.conf'...
OK, found. SANE backend 'hpaio' is properly set up.

Checking output of 'scanimage -L'...
device `hpaio:/net/HP_LaserJet_M1120n_MFP?ip=192.168.1.7' is a Hewlett-Packard HP_LaserJet_M1120n_MFP all-in-one

---------------------
| PYTHON EXTENSIONS |
---------------------

Checking 'cupsext' CUPS extension...
OK, found.

Checking 'pcardext' Photocard extension...
OK, found.

Checking 'hpmudext' I/O extension...
OK, found.

Checking 'scanext' SANE scanning extension...
OK, found.

---------------
| USER GROUPS |
---------------

sander adm dialout fax cdrom floppy tape audio dip video plugdev users lpadmin netdev powerdev scanner vboxusers

-----------
| SUMMARY |
-----------

error: 3 errors and/or warnings.

Please refer to the installation instructions at:
http://hplip.sourceforge.net/install/index.html

Done.

Please run:

su -c "tail -f /var/log/syslog"

then try scanning and post the output in the syslog.

Aaron

That is also what I posted at the top of my previous reply. Here it is again. This time I scanned with XSane instead of the scanimage commanline tool. The output is the same:

Sep 25 23:45:54 tweety xsane: scan/sane/marvell.c 66: unable to load restricted library: libhpmud.so: cannot open shared object file: No such file or directory

I googled for libhpmud.so and came across bug #380322 in Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/hplip/+bug/380322

I ran this:

/usr/lib# ln -s libhpmud.so.0.0.4 libhpmud.so

and after that scanning worked. I have filed a bug with Debian about this. I will update this question with the link to the bug report when I get the confirmation e-mail from the Debian Bug Tracking System.

The Debian bug report is here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=548379