Jaunty- M2727nf doesn't print double-sided after cups update

[Nektarios Chrissos]

Hello,

After a recent jaunty update (I think cups was updated too), I cannot print duplex on my HP Laserjet M2727nf . It "sucks" the pages back to print duplex, but then sends them back blank and prints normally single-sided.

What should I do?

Thank you in advance!

My HP-Check -t log follows:

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

Basic system information:
Linux AA1-laptop 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux

Distribution:
ubuntu 9.04

Checking Python version...
OK, version 2.6.2 installed

Checking PyQt 4.x version...
OK, version 4.4.4 installed.

Checking for CUPS...
Status: scheduler is running
Version: 1.3.9
error_log is set to level: warn

Checking for dbus/python-dbus...
dbus daemon is running.
python-dbus version: 0.83.0

------------------------------------
| 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...
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 3.9.6 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=3.9.6

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/HP
ppdbase=/usr/share/ppd
doc=/usr/share/doc/hplip-3.9.6
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=3.9.6.54
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
policy-kit=yes
hpijs-only-build=no
lite-build=no

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

Current contents of '~/.hplip/hplip.conf' file:
[last_used]
printer_name = HP_LaserJet_M2727nf_MFP
printer =
working_dir = .
device_uri = "hp:/net/HP_LaserJet_M2727nf_MFP?ip=192.168.254.3"

[commands]
scan = /usr/bin/xsane -V %SANE_URI%

[installation]
version = 3.9.6.54
date_time = 24/06/2009 11:55:13

[settings]
systray_messages = 0
systray_visible = 0

[fax]
email_address =
voice_phone =

[refresh]
rate = 30
enable = false
type = 1

[polling]
enable = false
device_list =
interval = 5

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

No devices found.

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

HP_LaserJet_1020
----------------
Type: Printer
Device URI: hp:/usb/HP_LaserJet_1020?serial=FN1WRHA
PPD: /etc/cups/ppd/HP_LaserJet_1020.ppd
PPD Description: HP LaserJet 1020 hpijs, 3.9.2
Printer status: printer HP_LaserJet_1020 disabled since Πεμ 02 Απρ 2009 02:40:20 μμ EESTUnplugged or turned off
Required plug-in status: Installed
error: Unable to communicate with device (code=12): hp:/usb/HP_LaserJet_1020?serial=FN1WRHA
error: Device not found
error: Communication status: Failed

HP_LaserJet_M2727nf_MFP_2
-------------------------
Type: Printer
Device URI: hp:/net/HP_LaserJet_M2727nf_MFP?ip=192.168.254.3
PPD: /etc/cups/ppd/HP_LaserJet_M2727nf_MFP_2.ppd
PPD Description: HP LaserJet M2727 MFP Series Postscript (recommended)
Printer status: printer HP_LaserJet_M2727nf_MFP_2 is idle. enabled since Τετ 24 Ιούν 2009 11:43:20 πμ EEST
Required plug-in status: Installed
Communication status: Good

HP_LaserJet_M2727nf_MFP_fax_2
-----------------------------
Type: Fax
Device URI: hpfax:/net/HP_LaserJet_M2727nf_MFP?ip=192.168.254.3
PPD: /etc/cups/ppd/HP_LaserJet_M2727nf_MFP_fax_2.ppd
PPD Description: HP Fax2 hpcups
Printer status: printer HP_LaserJet_M2727nf_MFP_fax_2 is idle. enabled since Τετ 24 Ιούν 2009 11:31:38 πμ EEST
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_M2727nf_MFP?ip=192.168.254.3' is a Hewlett-Packard HP_LaserJet_M2727nf_MFP all-in-one
device `v4l:/dev/video0' is a Noname Acer Crystal Eye webcam virtual device

---------------------
| 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 |
---------------

nektarios adm dialout cdrom plugdev lpadmin admin sambashare vboxusers

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

error: 1 error or warning.

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

Done.