KDE-apps does not print.

[Christer Sandberg]

Hi, 
I make a new try with the same question, in the hope that someone that that 
have an idea what to do will read it this time.

I try to print to my new Samsung ML 2571N printer. This is a network printer 
(I use that facility) and it supports postscript.
The problem is that the printouts from some applications always get stuck in 
the printing queue. After a short time KJobViewer shows the "Held" state.
The applications that I have tested so far and shows this behaviour are Kmail, 
Konqueror and Kate.
If I turn off the printer and send a job it will not get the "Held" state 
until I turn on the printer.
When I print a test page from the "Printer properties" this looks fine. The 
same if I print from Firefox or Gedit.
If I print from Open Office Writer the page will be transmitted to the 
printer, however only the bottom left corner of the page are printed in the 
upper right corner of the paper (this may be an unrelated problem).

lp, lpr and a2ps prints correctly.

I have also tested the same applications under Gnome. Except for OO Writer 
(that now printed correctly) the all behaved the same under Gnome.

I am using the Cups printing system via IPP.

There is no driver for ML 2571N available in the list to select from when 
installing a printer, so I downloaded a package from Samsung homepage, and 
ran their setup program.
After this there turned up a 2570 driver in the list, so I installed another 
printer with that driver, using the "Normal" printer installation wizard.

I get the same result from both.

/var/log/cups/error_log show this when I make an unsuccessful print:
[...]
E [27/Jun/2007:08:14:15 +0200] cupsdAuthorize: Local authentication 
certificate not found!
E [27/Jun/2007:08:14:15 +0200] cupsdAuthorize: Local authentication 
certificate not found!
E [27/Jun/2007:08:14:15 +0200] cupsdAuthorize: Local authentication 
certificate not found!
E [27/Jun/2007:08:14:15 +0200] PID 7950 (/usr/lib/cups/backend/ipp) stopped 
with status 1!
E [27/Jun/2007:08:14:16 +0200] cupsdAuthorize: Local authentication 
certificate not found!
E [27/Jun/2007:08:14:16 +0200] cupsdAuthorize: Local authentication 
certificate not found!
E [27/Jun/2007:08:14:16 +0200] cupsdAuthorize: Local authentication 
certificate not found!
[...]

Screenshots from my printer settings can be found here:
 http://www.idt.mdh.se/~csg/tmp/print/

I also checked the openprinting.org homepage for drivers, but I actually don't 
understand what to do there. I selected 2571N came to a page saying that 
driver works perfectly, clicked on "Postscript" and came to a page where I 
could generate a ppd-file. Now I had to chose printer model again, but the 
2571N was not available in the drop down menu. I chosed the 2550N model 
instead hoping that it was almost the same. I stored the file 
in /etc/cups/ppd. I also installed a new printer using what I think is this 
driver, but it worked the same.

My distribution is Ubuntu 7.04
cupsys version is: 1.2.8-0

I would be very happy for any advice how to find a solution to these problems.
-- 
Christer