installing printer Deskjet HP 2050 J510 impossible asks for enabling policies in system-administration- print from main menu , but it can't be found in xubuntu 10.4

Did you grab and install the latest hplip from the hplip site?

Yes I did, everything looks O.K.. in terminal, at least but , I'm getting message from 'Printing troubleshooter' : The queue Deskjet HP 2050 J510 is not Enabled. The reason given is : ' /usr/lib/cups/backend/hp failed

To enable it select the 'Enabled' checkbox in the 'Policies' tab for printer in the printer administration tool to start this tool, select System -> Administration->Printing from the main menu.

The problem is I can't find it anywhere in Xubuntu applications and don't know if I can circumvent it in the Terminal and how

I suggest you download the latest hplip

http://downloads.sourceforge.net/project/hplip/hplip/3.11.3a/hplip-3.11.3a.run?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fhplip%2Ffiles%2Fhplip%2F3.11.3a%2Fhplip-3.11.3a.run%2Fdownload&ts=1301318836&use_mirror=surfnet

Put it in the Downloads folder then run:

cd ~/Downloads; chmod +x ./hplip-3.11.3a.run; ./hplip-3.11.3a.run

And it will install

 hp-check -t

HP Linux Imaging and Printing System (ver. 3.11.3a)
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 hynek-desktop 2.6.32-30-generic #59-Ubuntu SMP Tue Mar 1 21:30:21 UTC 2011 i686 GNU/Linux

Distribution:
ubuntu 10.04

Checking Python version...
OK, version 2.6.5 installed

Checking PyQt 4.x version...
OK, version 4.7.2 installed.

Checking for CUPS...
Status: scheduler is running
Version: 1.4.3
error_log is set to level: debug

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 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 3.11.3a 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=3.11.3a

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/HP
ppdbase=/usr/share/ppd
doc=/usr/share/doc/hplip-3.11.3a
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=3.11.3a
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/Deskjet_2050_J510_series?serial=CN07R2N4W805D1"

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

[installation]
version = 3.11.3a
date_time = 28/03/11 18:29:29

[settings]
systray_messages = 0
systray_visible = 0

[fax]
email_address =
voice_phone =

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

[polling]
enable = false
device_list =
interval = 5

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

  Device URI Model
  -------------------------------- ---------------------------
  hp:/usb/Deskjet_2050_J510_series HP Deskjet 2050 J510 series
  ?serial=CN07R2N4W805D1

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

Deskjet_2050_J510
-----------------
Type: Printer
Device URI: hp:/usb/Deskjet_2050_J510_series?serial=CN07R2N4W805D1
PPD: /etc/cups/ppd/Deskjet_2050_J510.ppd
PPD Description: HP Deskjet 2050 j510 Series, hpcups 3.11.3
Printer status: printer Deskjet_2050_J510 is idle. enabled since Mon 28 Mar 2011 18:21:42 CEST
Communication status: Good

Deskjet_2050_J510_2
-------------------
Type: Printer
Device URI: hp:/usb/Deskjet_2050_J510_series?serial=CN07R2N4W805D1
PPD: /etc/cups/ppd/Deskjet_2050_J510_2.ppd
PPD Description: HP Deskjet 2050 j510 Series, hpcups 3.11.3a
Printer status: printer Deskjet_2050_J510_2 now printing Deskjet_2050_J510_2-0. enabledProcessing page 1...11 18:24:33 CEST
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:/usb/Deskjet_2050_J510_series?serial=CN07R2N4W805D1' is a Hewlett-Packard Deskjet_2050_J510_series 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 0x8711 at 001:002:
    Device URI: hp:/usb/Deskjet_2050_J510_series?serial=CN07R2N4W805D1
    Device node: /dev/bus/usb/001/002
    Mode: 0664

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

hynek adm lp dialout fax cdrom floppy tape dip video plugdev fuse lpadmin admin sambashare nopasswdlogin

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

No errors or warnings.

Done.
hynek@hynek-desktop:~$ hp-check -t

This is what happens all the time , is there any other and meaningful suggestion? Because that blasted thing is not working and troubleshooting messages are the same

I have another very long report from the troubleshooter but can't send it this way as it is too long and the launchpad wont take it

Please Actionparsnip
do not give any advice to anybody, any more if You do not understand the problem. You may be visible ; but DOGOODERS do usually cause more problems. Obviously You are very active, however, with the exception of a few things anyone can find for themselves, Your activity causes more problems than , those who were looking for a serious advice had had

I suggest you look at the karma I have achieved which is given by users after they receive help. Yes they can find solutions themselves but you can say that about ANY situation. The internet is the largest information database known to mankind so there will most likely be a solution or help to ANY situation you can name. Users come here searching for help and I am happy to give them links and guidance based on their requests. I suggest you look through the solved issues to see the score

That is your opinion, however you cause more problems than your " karma" - so please . stop to be ALLKNOW-DOGOODER: and do not confuse people that need help by repeating advices that helped once , earlier, and under other conditions ; if you are ignorant enough as not to read the question, and comprehend what the question is, it would be more honest (civilised) to shut up and leave the space for someone else who knows . At least the problem wouldn't show in the "solved" and others could help. I mean the ones who read, analyse, and do not bullshit

Thanks Jeruvy, that solved my question.

By the way Jeruvy, should you read the question from the start you would not call it harassment -unless you have another pen name, because this answer appears in other unsolved questions and is always actionparsnip replaying