Invalid peer credentials for "root"

[Helge Blischke]

Tom Niemiec wrote:

>> Tom Niemiec wrote:
>>
>> > Hello,
>> > My name's Tom Niemiec and I'm writing because of a problem, that I have
>> > with CUPS.
>> >
>> > I'm working on a project for my collage graduate work and I have to
>> > create a Print Server on a pc with Linux.
>> >
>> > I'm using SAMBA for my domain server, my shares and for printers
>> > sharing. I successfully added a CUPS-PDF printer to the Print Server
>> > and also I successfully added the printer to two Windows XP PCs. The
>> > problem is that I can't print on them while being logged as a normal
>> > domain user ( via Windows xp ). To test if the printer works on Windows
>> > accounts I logged as root on the Windows machine and everything worked
>> > fine. The file was printed, it was created in the output folder I set
>> > in cups-pdf.conf and a successful line was written in the page_log
>> > file. Based on that the problem is not o the Windows side.
>> >
>> > When I tried to print something on the normal domain user account a
>> > line was created in the error_log:
>> >
>> > E [13/Nov/2010:22:47:34 +0100] Invalid peer credentials for "root" -
>> > got 1001, expected 0!
>> >
>> > Please I really need help with this. I'm working on my graduate work
>> > and
>> > this problem holds me back form  completing my work. If there are any
>> > information you need or screen shots, configuration files, please feel
>> > free to ask.
>> >
>> > Also I talked to Dr. rer. nat. Volker Christian Behr who created
>> > cups-pdf to find out if the problem lies on the cups-pdf side. After a
>> > few emails He gave me a hint "... to disable user-based access control
>> > for CUPS (since I never tried to do that nor am I using any Windows I
>> > cannot give you any hints on that) "
>> >
>> > Maybe someone knows how to do this or has an other solution, please
>> > help
>> > :)
>>
>> Depending on the CUPS version you use, set up either the AuthClass or the
>> Require directive in cupsd.conf. If that does not conform with your SAMBA
>> domain setting, try to set some default user name which can be
>> autentified on your Linux box, by using the printjob username = %U
>> directive in the smb.conf file.
>>
>> Helge
>>
> 
> I'm using:
> - LINUX Debian 2.6.26
> - SAMBA 3.2.5
> - CUPS 1.3.8
> 
> Could you tell me more about those changes in the cupsd.conf ?

I'd suggest to insert the drective
printjob username = XXXXX
beneath the 
[Drukarka_PDF]
section in your smb.conf (and yes, you may do that using Swat).
I suggest this as - from my experience - cups is a little bit picky with 
authentification.

As I currently have no samba based configuration to test with, I cannot try 
it out myself.

Helge