[Liverpool] Printing problem on Ubuntu 12.04

Thu Jul 4 09:36:49 UTC 2013

Hi David,

I was skeptical as a) I have the problem on 2 printers, and b) both of them
used to work, but I tried for the network printer here and I do indeed
appear to be able to print...  many thanks for the suggestion!

Best,
Hakim

On 4 July 2013 10:16, David Hughes <dghughes82 at gmail.com> wrote:

>  Hi Hakim,
>
> I've had similar problems to this; if I remember correctly it was
> something to do with CUPS having chosen the wrong driver for the printer.
> Something you might want to try is: if you open up your web browser and
> type 'localhost:631' in the address bar you should get to CUPS's web
> administration interface.
>
> From there, click the Printers tab, click the name of the printer that
> you're currently trying to use and select 'Modify Printer' from the drop
> down Administration menu. On clicking the continue button several times you
> should get to a screen where you can change the driver that's been assigned
> to the printer; probably best if you make a note of whichever one is
> currently assigned before changing anything.
>
> Something else that might give you a good hint is if you look the model
> number of the printer that you're trying to configure at
> http://www.openprinting.org/printers. Hope this helps! Good luck.
>
> David
>
>
> On 04/07/13 09:56, Hakim Cassimally wrote:
>
> Hi all,
> I've generally been quite impressed with how simple printing on Linux
> turns out to be, but at the moment "it's not working".  I've
> investigated/asked for help to the extent that I can, and can't get to the
> bottom of it, so was wondering if you can help!
>
>  = My laptop =
>
>    Thinkpad x60t running Ubuntu 12.04
>    Linux chips 3.2.0-48-generic-pae #74-Ubuntu SMP Thu Jun 6 20:05:01 UTC
> 2013 i686 i686 i386 GNU/Linux
>
>  = What happens =
>
>  I print a document from a GUI app.  This problem happens to x2 printers
> I have in my list (DoES's networked Laser printer, and my dad's
> USB-connected Laser printer), both of which I have successfully printed to
> before on this machine.
>
>  Gnome's task bar shows a printer icon.  When I click on this I can see
> the print queue for the printer I've printed to.  It starts off with Status
> = "Processing: Not connected" and after a minute or so this changes to
> "Held".  The document never prints.
>
>  == Check Cups status  ==
>
>  If I go to http://localhost:631/printers/DoESLaserJet-2605dn for
> example, the State of the job is listed as
>
>    "held since
> Thu 04 Jul 2013 09:16:17 BST
> "/usr/lib/cups/backend/hp failed""
>
>  This is pretty much as useful as "There was an error LOL"
>
>  == Check Logs ==
>
>  In /var/log/cups, the newly touched files are access_log which includes:
>
>    localhost - - [04/Jul/2013:09:14:16 +0100] "POST
> /printers/DoESLaserJet-2605dn HTTP/1.1" 200 59822 Print-Job successful-ok
>   localhost - - [04/Jul/2013:09:14:21 +0100] "POST / HTTP/1.1" 200 342
> Create-Printer-Subscription successful-ok
>   localhost - - [04/Jul/2013:09:14:21 +0100] "POST / HTTP/1.1" 200 342
> Create-Printer-Subscription successful-ok
>   localhost - - [04/Jul/2013:09:16:08 +0100] "POST /jobs/ HTTP/1.1" 200
> 140 Cancel-Job successful-ok
>
>  page_log includes:
>    DoESLaserJet-2605dn hakim 32 [04/Jul/2013:09:16:31 +0100] 1 1 -
> localhost does anniversary invite.pdf - -
>
>  error_log only gets updated ~5 minutes later with:
>    E [04/Jul/2013:09:21:40 +0100] [Job 32] Stopping unresponsive job!
>
>  BUT it does also have this from yesterday:
>
>    E [03/Jul/2013:10:24:28 +0100] Unknown directive SystemGroup on line
> 16 of /etc/cups/cupsd.conf.
>   W [03/Jul/2013:10:24:33 +0100] failed to CreateProfile:
> org.freedesktop.ColorManager.AlreadyExists:profile id
> 'DoESLaser↪\Jet-2605dn-Gray..' already exists
>  (an
>
>  I've checked the error in
> https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1088448 and it looks
> like the SystemGroup entry has been removed from cups, but not from the
> cupsd.conf file.  I've commented out the entry and re-started Cups, but
> that didn't fix the problem.  Bah.
>
>  == Possible errors and debugging ==
>
>  At one point I thought that the problem might be with permissions in
> /var/{log,spool}/cups and have done some chgrp, probably between lp and
> lpadmin.  Nothing has fixed problem obviously.
>
>  === Me cargo culting Things I Don't Understand ===
>
>  So, um, I have an SSD.  I cargo culted some stuffs about tuning for SSD,
> including adding these lines to /etc/fstab
>
>    tmpfs   /var/spool tmpfs   defaults,noatime,mode=1777   0  0
>   tmpfs   /var/log   tmpfs   defaults,noatime,mode=0755   0  0
>
>  It occurred to me at some point that if Cups had created paths it needed
> on *configuration* rather than init, then the next time I reboot, it might
> be unhappy...
>
>  I've commented out those lines, rebooted, and attempted to rerun
> configuration by running:
>
>    sudo dpkg-reconfigure cups
>    sudo dpkg-reconfigure dbus
>    sudo dpkg-reconfigure hplip
>
>  Again, these don't seem to have helped.
>
>  = HAYULP? =
>
>  I'd be very grateful for any suggestions for what to do next!
>
>  Ta,
> Hakim
>
>
>
>
>
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