Thanks, Sarbeswar but I still don't have luck with scanning. I installed the most recent driver from the homepage and removed all print queues. However even without setting up the printer with hp-setup I can still scan and I still get the I/O device error. The hp-check -t output shows an hpaio/ device that is used by the sane backend. As it seems that every new queue uses hp:/ maybe this is a legacy driver? But how do I get rid of the settings in the sane backend? hp-check -t HP Linux Imaging and Printing System (ver. 3.11.5) 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 big-one 2.6.38-10-generic-pae #46-Ubuntu SMP Tue Jun 28 16:54:49 UTC 2011 i686 i686 i386 GNU/Linux Distribution: ubuntu 11.04 Checking Python version... OK, version 2.7.1 installed Checking PyQt 4.x version... OK, version 4.8.3 installed. Checking for CUPS... Status: scheduler is running Version: 1.4.6 error_log is set to level: warn Checking for dbus/python-dbus... dbus daemon is running. python-dbus version: 0.83.1 ------------------------------------ | 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 devel- Common Unix Printing System development files... OK, found. Checking for dependency: CUPS image - CUPS image development files... OK, found. 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... OK, found. Checking for dependency: PyQt 4 DBus - DBus Support for PyQt4... 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 libnotify - Python bindings for the libnotify Desktop notifications... 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 3.11.5 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=3.11.5 [dirs] home=/usr/share/hplip run=/var/run ppd=/usr/share/ppd/HP ppdbase=/usr/share/ppd doc=/usr/share/doc/hplip-3.11.5 icon=/usr/share/applications cupsbackend=/usr/lib/cups/backend cupsfilter=/usr/lib/cups/filter drv=/usr/share/cups/drv/hp # Following values are determined at configure time and cannot be changed. [configure] network-build=yes 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=no foomatic-drv-install=no foomatic-ppd-install=no foomatic-rip-hplip-install=no hpcups-install=yes cups-drv-install=yes cups-ppd-install=no internal-tag=3.11.5 restricted-build=no ui-toolkit=qt4 qt3=no qt4=yes policy-kit=no hpijs-only-build=no lite-build=no udev-acl-rules=yes hpcups-only-build=no hpijs-only-build=no Current contents of '/var/lib/hp/hplip.state' file: # hplip.state - HPLIP runtime persistent variables. [plugin] installed=0 eula=0 Current contents of '~/.hplip/hplip.conf' file: [last_used] printer_name = working_dir = . device_uri = "hp:/usb/HP_LaserJet_3300_3310_3320?serial=00XXXXXXXXXX" [commands] scan = /usr/bin/xsane -V %SANE_URI% [installation] version = 3.11.5 date_time = 07/21/2011 20:51:34 [settings] systray_messages = 0 systray_visible = 2 [fax] email_address = voice_phone = [refresh] rate = 30 enable = false type = 1 [polling] enable = false device_list = interval = 5 -------------------------- | DISCOVERED USB DEVICES | -------------------------- Device URI Model ------------------------------------------------------ ------------------------------- hp:/usb/HP_LaserJet_3300_3310_3320?serial=00XXXXXXXXXX HP LaserJet 3300/3310/3320 --------------------------------- | INSTALLED CUPS PRINTER QUEUES | --------------------------------- lpstat ------ Type: Unknown Device URI: No destinations added. ---------------------- | 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:/usb/HP_LaserJet_3300_3310_3320?serial=00XXXXXXXXXX' is a Hewlett-Packard HP_LaserJet_3300_3310_3320 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. ----------------- | USB I/O SETUP | ----------------- Checking for permissions of USB attached printers... HP Device 0x817 at 006:002: Device URI: hp:/usb/HP_LaserJet_3300_3310_3320?serial=00XXXXXXXXXX Device node: /dev/bus/usb/006/002 Mode: 0664 getfacl: Removing leading '/' from absolute path names # file: dev/bus/usb/006/002 # owner: root # group: lp user::rw- user:markus:rw- group::rw- mask::rw- other::r-- --------------- | USER GROUPS | --------------- markus adm lp dialout cdrom audio plugdev lpadmin admin sambashare davfs2 vboxusers family davfs ----------- | SUMMARY | ----------- No errors or warnings. Done.