Sadly I don't have any real solutions for it, but can at least confirm
that it's not isolated to your laptop, so I doubt the SSD stuff is an
issue :-) It happens on my Ubuntu Sony VAIO, and also on the Ubuntu
Samsung netbook here in DoES.
It is sometimes possible to fix by opening "Printing" and enabling the
printer - it seems to fail and then set the printer to a "not in use"
state, although it'll happily queue stuff up for it.
If the enabling it trick doesn't work, rebooting your machine usually
will, but that's far from optimal solution. I've not even done as much
digging into it as you have, but would love to get a fix, as it's
generally 50/50 whether or not printing something will work for me :-(
Cheers,
Adrian.
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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