[cups] CUPS Disaster: printer queues going AOL or becoming disfunctional
Robert Heller
heller at deepsoft.com
Thu Jul 17 08:13:46 PDT 2014
At Thu, 17 Jul 2014 15:45:09 +0200 "The CUPS user discussion list." <cups at cups.org> wrote:
>
>
> Am 14.07.2014 um 21:45 schrieb Robert Heller:
>
> > At Mon, 14 Jul 2014 21:27:54 +0200 "The CUPS user discussion list." <cups at cups.org
> > > wrote:
> >
> >>
> >>
> >> Am 14.07.2014 um 21:04 schrieb Robert Heller:
> >>
> >>> At Mon, 30 Jun 2014 11:07:03 +0200 (CEST) "The CUPS user discussion
> >>> list." <cups at cups.org> wrote:
> >>>
> >>>>
> >>>>
> >>>> Hello,
> >>>>
> >>>> On Jun 29 19:04 Robert Heller wrote (excerpt):
> >>>>> Printing a test page resulted in a
> >>>>> client-error-document-format-not-supported type of error.
> >>>>> Deleting and re-installing the print queues fixed it.
> >>>>> Why did this happen?
> >>>>> And why does re-installing the print queues fix it?
> >>>>
> >>>> At least for me impossible to find out from your information.
> >>>
> >>> OK, I did a *minor* update, updating these packages:
> >>>
> >>> Updated:
> >>> gdb.x86_64 0:7.2-64.el6_5.2
> >>> initscripts.x86_64 0:9.03.40-2.el6.centos.3
> >>> libsmbclient.x86_64 0:3.6.9-169.el6_5
> >>> lzo.x86_64 0:2.03-3.1.el6_5.1
> >>> nfs-utils.x86_64 1:1.2.3-39.el6_5.3
> >>> samba-client.x86_64 0:3.6.9-169.el6_5
> >>> samba-common.x86_64 0:3.6.9-169.el6_5
> >>> samba-winbind.x86_64 0:3.6.9-169.el6_5
> >>> samba-winbind-clients.x86_64 0:3.6.9-169.el6_5
> >>>
> >>> *none* of these packages have anything to do with cups or any of the
> >>> filters
> >>> involved. I just tried to print a test page:
> >>>
> >>> newserver.wendellfreelibrary.org% lp /usr/share/cups/data/testprint
> >>> lp: Unsupported format 'application/vnd.cups-banner'!
> >>>
> >>> What is going on here?
> >>>
> >>> Also:
> >>>
> >>> newserver.wendellfreelibrary.org% lp login.ps
> >>> lp: Unsupported format 'application/postscript'!
> >>>
> >>> (login.ps is the result of 'a2ps .login -o login.ps')
> >>>
> >>> And it is a *PostScript* printer. The *filter* should be like /bin/
> >>> cat,
> >>> right?
> >>>
> >>> This is in the error log:
> >>>
> >>> E [14/Jul/2014:14:34:56 -0400] Unable to remove temporary file "/
> >>> var/
> >>> spool/cups/tmp/.fontconfig" - Is a directory
> >>> E [14/Jul/2014:14:35:02 -0400] Returning IPP client-error-document-
> >>> format-not-supported for Send-Document (ipp://localhost:631/
> >>> printers/
> >>> BlackandWhiteLaserjet) from localhost
> >>> E [14/Jul/2014:14:35:27 -0400] Unable to backup printers.conf -
> >>> Permission denied
> >>> E [14/Jul/2014:14:35:27 -0400] Unable to save printers.conf -
> >>> Permission denied
> >>> E [14/Jul/2014:14:35:27 -0400] Unable to restore printers.conf -
> >>> Permission denied
> >>> E [14/Jul/2014:14:39:08 -0400] Returning IPP client-error-document-
> >>> format-not-supported for Send-Document (ipp://localhost:631/
> >>> printers/
> >>> BlackandWhiteLaserjet) from localhost
> >>>
> >>>
> >>>
> >>>>
> >>>>> (Longing for the good old days of LPD! -- CUPS can be a total pain
> >>>>> in the butt at times.)
> >>>>
> >>>> Using a LPD spooler won't help when the filtering fails.
> >>>>
> >>>> Regardless that CUPS reported the error, very likely the root cause
> >>>> is not CUPS itself but elsewhere - in particular because a
> >>>> "document-format-not-supported" error indicates that "something"
> >>>> with the filtering got "somehow" messed up.
> >>>>
> >>>> Usually it is not CUPS itself that converts the original data
> >>>> that your application had submitted as print job to CUPS.
> >>>> Actually CUPS calls various "external" programs that do the data
> >>>> conversion.
> >>>>
> >>>> When different CUPS versions in different Linux distribution
> >>>> versions
> >>>> make a difference regarding the filtering, the usual reason is not
> >>>> CUPS itself but that different Linux distributions use different
> >>>> "external" programs (or different versions of the "external"
> >>>> programs).
> >>>>
> >>>> For example after printer driver software upgrades, the filtering
> >>>> for
> >>>> an existing print queue may no longer work because print queue's
> >>>> PPD
> >>>> may no longer match the upgraded driver software.
> >>>>
> >>>> I assume the root cause is "something" in the particular Linux
> >>>> distributions
> >>>> that you use so that you may get better help from the particular
> >>>> Linux
> >>>> distributions mailing lists whereto you also already reported your
> >>>> issue.
> >>>>
> >>>>
> >>>> Kind Regards
> >>>> Johannes Meixner
> >>>
> >>> --
> >>> Robert Heller -- 978-544-6933 / heller at deepsoft.com
> >>> Deepwoods Software -- http://www.deepsoft.com/
> >>> () ascii ribbon campaign -- against html e-mail
> >>> /\ www.asciiribbon.org -- against proprietary attachments
> >>>
> >>>
> >>>
> >>
> >> It seems that the scheduler (cupsd) is not running as root
> >> ("permission denied" in your error_log).
> >> I suspect the whole CUPS installation is broken.
> >
> > newserver.wendellfreelibrary.org% ps aux | grep cupsd
> > root 9936 0.0 0.0 195956 4796 ? Ss 14:34 0:01
> > cupsd -C /etc/cups/cupsd.conf
> > newserver.wendellfreelibrary.org% dir -ld /etc/cups
> > drwxr-xr-x. 5 root lp 4096 Jul 14 14:52 /etc/cups/
> > newserver.wendellfreelibrary.org% dir -ldZ /etc/cups
> > drwxr-xr-x. root lp system_u:object_r:cupsd_etc_t:s0 /etc/cups/
> >
> > No, everything seems to be ok. Note: SELINUX is enabled and
> > enforcing. It is
> > the *stock* cups install from the distro's RPMs (CentOS 6.5). It is
> > not some
> > hand built (from source) install or anything like that.
> >
> >>
> >> Helge
> >>
> >> _______________________________________________
> >> cups mailing list
> >> cups at cups.org
> >> https://www.cups.org/mailman/listinfo/cups
> >>
> >>
> >
> > --
> > Robert Heller -- 978-544-6933 / heller at deepsoft.com
> > Deepwoods Software -- http://www.deepsoft.com/
> > () ascii ribbon campaign -- against html e-mail
> > /\ www.asciiribbon.org -- against proprietary attachments
> >
> >
>
> What about the SELinux settings?
Stock, enforcing. Arg.. Why would a yum update cause this sort of problem?
>
> Helge
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> cups at cups.org
> https://www.cups.org/mailman/listinfo/cups
>
>
--
Robert Heller -- 978-544-6933
Deepwoods Software -- Custom Software Services
http://www.deepsoft.com/ -- Linux Administration Services
heller at deepsoft.com -- Webhosting Services
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