Since I upgraded our systems to 11.0 the HP LaserJet 5 will no longer
print on both sides of the paper. The paper moves through the duplexing
unit, but only one side is printed. And, it's not that pages 1, 3, 5, etc.
are printed, they're all printed but only on one side of the page.

I'll check the CUPS site, too, but I'm looking in all possible places for
an explanation.

Rich

On Tue, 13 Feb 2007 03:41:23 +0000, rshepard wrote:

> Since I upgraded our systems to 11.0 the HP LaserJet 5 will no longer
> print on both sides of the paper. The paper moves through the duplexing
> unit, but only one side is printed. And, it's not that pages 1, 3, 5, etc.
> are printed, they're all printed but only on one side of the page.
>
> I'll chJoin the club. I've got a canon 4200 and had the same problem
>
except the 1st copy would print both sides and everything after
that only one side. Never found a solution.

On 2007-02-13, dennyg <dennyg2k@cfl.rr.com> wrote:

> except the 1st copy would print both sides and everything after
> that only one side. Never found a solution.

This problem is new to me. It's worked perfectly for the past eight or so
years. It's definitely a CUPS problem, not the printer itself; I can print
the configuation test and that comes out on both sides of one page.

Running 'lpoptions' with and without various options (and looking at
/etc/cups/lpoptions) suggests that everything is properly configured. Very
puzzling.

Rich

In <slrnet2cr3.65h.rshepard@salmo.appl-ecosys.com>, rshepard wrote:

> Since I upgraded our systems to 11.0 the HP LaserJet 5 will no longer
> print on both sides of the paper. The paper moves through the duplexing
> unit, but only one side is printed. And, it's not that pages 1, 3, 5, etc.
> are printed, they're all printed but only on one side of the page.
>
> I'll check the CUPS site, too, but I'm looking in all possible places for
> an explanation.
>
> Rich

Did you check the Gutenprint stuff? I think it's on extra (or testing?),
and is a newer version for the drivers. It works excellent for me.

Good luck
Franz

rshepard post:

> Since I upgraded our systems to 11.0 the HP LaserJet 5 will no longer
> print on both sides of the paper. The paper moves through the duplexing
> unit, but only one side is printed. And, it's not that pages 1, 3, 5, etc.
> are printed, they're all printed but only on one side of the page.

Anything strange in your /var/log/cups/error_log?

also, CUPS 1.2.8 came out today and is available for download from the
CUPS web site at: http://www.cups.org/software.php

If you're lucky that version corrects your bug. Otherwise you may want to
check changelogs to see wether something relevant was changed in the
version of cups that slackware uses in 11.

Gr,

Roel

On 2007-02-14, Franz M. Sauerzopf <sauer@ati.ac.at> wrote:

> Did you check the Gutenprint stuff? I think it's on extra (or testing?),
> and is a newer version for the drivers. It works excellent for me.

Franz,

No, I haven't. I've been using the Easy Software Print-Pro version 4.x for
years. Never had a problem before now.

But, I'll look at the Gutenprint stuff. I think it's CUPS per se, not the
driver, but I may very well be wrong.

Thanks,

Rich

On 2007-02-14, Roel Kluin <rjckluin@_REMOVE_hot_THESE_mail.com> wrote:

> Anything strange in your /var/log/cups/error_log?

Roel,

No. Nothing. It looked more like the access_log because there were no
errors noted. Here's the last entry from yesterday:

I [13/Feb/2007:15:14:31 -0800] Adding start banner page "none" to job 1576.
I [13/Feb/2007:15:14:31 -0800] Adding end banner page "none" to job 1576.
I [13/Feb/2007:15:14:31 -0800] Job 1576 queued on 'laser5_duplex' by 'pamela'.
I [13/Feb/2007:15:14:31 -0800] Started filter /usr/lib/cups/filter/pstops
(PID 29474) for job 1576.
I [13/Feb/2007:15:14:31 -0800] Started filter
/usr/lib/cups/filter/pstoraster (PID 29475) for job 1576.
I [13/Feb/2007:15:14:31 -0800] Started filter
/usr/lib/cups/filter/rastertopcl (PID 29476) for job 1576.
I [13/Feb/2007:15:14:31 -0800] Started backend /usr/lib/cups/backend/socket
(PID29477) for job 1576.

It printed one side per page despite each sheet traveling through the
duplexer.

> also, CUPS 1.2.8 came out today and is available for download from the
> CUPS web site at: http://www.cups.org/software.php

I'll try that.

> If you're lucky that version corrects your bug. Otherwise you may want to
> check changelogs to see wether something relevant was changed in the
> version of cups that slackware uses in 11.

I'm not at all sure that I'd recognize anything relevant.

Thanks,

Rich

> Gr,
>
> Roel
>

rshepard@nowhere.appl-ecosys.com wrote:

> Running 'lpoptions' with and without various options (and looking at
> /etc/cups/lpoptions) suggests that everything is properly configured. Very
> puzzling.

Hmm, this 'lpoptions' is new for me. I never used it. I always
configured my cups printers through the web interface on
http://localhost:631.
Did you check your configuration (installed options, default settings)
with the web interface?

Regards,

Kees.

--
Kees Theunissen.

rshepard@nospam.appl-ecosys.com wrote:

> It printed one side per page despite each sheet traveling through the
> duplexer.

This traveling through the duplexer is normal printer behavior when
printing single sided with a duplexer installed.

Details depend on the exact printer capabilities and configuration
but a normal double sided printing sequence would be:

print page 2 on the back side of the first sheet
turn the paper
print page 1 on the front side of the first sheet
print page 4 on the back side of the second sheet
turn the paper
print page 3 on the front side of the first sheet
....
Sheets will be collected front side down in the output bin.

When printing single sided with a duplex unit installed
the printer still wants to turn the paper, because you
could have loaded the paper tray with letterhead paper.
The single sided printing sequence will then be:

'print' a black page on the back side of the first sheet
turn the paper
print page 1 on the front side of the first sheet
'print' a blanc page on the back side of the second sheet
turn the paper
print page 2 on the front side of the first sheet
....
Sheets still will be collected front side down in the output bin.


Your problem is not that the sheets travel through the duplexer:
that is normal for single sided printing. Your problem is that
cups does not select double sided printing.
This looks like cups being unaware of an installed optional
duplex unit. Check this with the cups web interface on
http://localhost:631

Regards,

Kees.

--
Kees Theunissen.

On 2007-02-15, Kees Theunissen <theuniss@rijnh.nl> wrote:

> Hmm, this 'lpoptions' is new for me. I never used it. I always configured
> my cups printers through the web interface on http://localhost:631. Did
> you check your configuration (installed options, default settings) with
> the web interface?

Kees,

The web interface, lpoptions, and /usr/sbin/printers all show the same
configuration for each of the defined printers. They're all different views
of the same information, and that's why I cannot find what's broken.

Thanks,

Rich