[cups] Setup cups and Brother HL-4150CDN on FreeBSD 10

Thu Jun 12 04:10:36 UTC 2014

More informational, than anything else. But perhaps it will help...
> Hello Don, cups and freebsd friends,
>
> On Mon, Jun 09, 2014 at 11:17:56AM -0700, Don Lewis wrote:
>> On  9 Jun, Willy Offermans wrote:
>> > Hello Chris and cups, and freebsd friends,
>> >
>> > On Mon, Jun 09, 2014 at 07:20:09AM -0700, Chris H wrote:
>> >> Greetings...
>> >> > Dear cups and freebsd friends,
>> >> >
>> >> > I'm trying to setup CUPS on FreeBSD 10. I managed to install the software
>> >> > and I managed to make the printer available to the OS via /dev/ulpt0:
>> >> >
>> >> > from messages:
>> >> > <snip>
>> >> > ...
>> >> > Jun  8 17:16:13 donald kernel: ugen1.2: <Brother> at usbus1
>> >> > Jun  8 17:16:13 donald kernel: ulpt0: <Brother HL-4150CDN series, class 0/0, rev
>> 2.00/1.00,
>> >> > addr 1> on usbus1
>> >> > Jun  8 17:16:13 donald kernel: ulpt0: using bi-directional mode
>> >> > Jun  8 17:16:13 donald kernel: ulpt0: offline
>> >> > ...
>> >> > </snip>
>> >> >
>> >> > from ll /dev/ulpt0
>> >> >
>> >> > crw-rw----  1 root  cups  - 0x65 Jun  8 17:16 /dev/ulpt0
>> >> >
>> >> > If I executed the following command:
>> >> >
>> >> > echo 'true' > /dev/ulpt0
>> >> >
>> >> > then the printer reacts and shows that data is transferred to the printer.
>> >> >
>> >> > However, if I try to add the printer to CUPS via the web-interface, then
>> >> > the printer is not detectable. I would expect the printer to be found after
>> >> > searching. I can find an error message in error_log:
>> >> >
>> >> > <snip>
>> >> > ...
>> >> > E [08/Jun/2014:17:37:53 +0200] [Client 15] Invalid peer credentials for "root" - got
>> 8,
>> >> > expected 0!
>> >> > ...
>> >> > </snip>
>> >> >
>> >> > I'm not sure if this is related to the fact that the printer cannot be
>> >> > detected.
>> >> >
>> >> > If I add the printer manually to the printer.conf file:
>> >> >
>> >> > </Printer>
>> >> > <Printer BHL4150CDN_2>
>> >> > UUID urn:uuid:de11cfc5-3cbd-361e-5750-8b0e3f0ff4ad
>> >> > AuthInfoRequired none
>> >> > Info Brother HL-4150CDN series
>> >> > Location attic
>> >> > MakeModel Brother HL-4150CDN series CUPS
>> >> > DeviceURI usb:/dev/ulpt0
>> >> > State Idle
>> >> > StateTime 1402241099
>> >> > Type 8392780
>> >> > Accepting Yes
>> >> > Shared No
>> >> > JobSheets none none
>> >> > QuotaPeriod 0
>> >> > PageLimit 0
>> >> > KLimit 0
>> >> > OpPolicy default
>> >> > ErrorPolicy stop-printer
>> >> > </Printer>
>> >> >
>> >> > then I still cannot print to the printer.
>> >> >
>> >> > Does anyone has a clue what is going on? Or how can I debug this problem?
>> >> >
>> >> It appears that the user under which you are attempting all this,
>> >> doesn't have permission to manage, or otherwise manipulate/view the
>> >> printer facilities. My suggestion would be to (if available) go to
>> >> http://localhost:631/admin in your browser, and login with the root
>> >> password, and then GRANT permission(s) to the user you want to give
>> >> access to.
>> >>
>> >> Also insure that the cups user/group were added correctly.
>> >>
>> >> Best wishes.
>> >>
>> >> --Chris
>> >> >
>> >> > --
>> >
>> > I did as you told. I logged in with root account, but there were no
>> > printers available. Also the /dev/ulpt0 device cannot be detected, although
>> > the local printer is connected to this device. <find new printer> under
>> > administration is not successful. No printer will appear.
>>
>> cups doesn't use the /dev/ulpt* device.  For USB printers, it uses a the
>> device node under /dev/usb.  This device needs to be accessable to the
>> cups user.  See the last devfs rule here:
>> <http://www.freebsd.org/doc/en/articles/cups/printing-cups-configuring-server.html>
>>
>
> I already added these rules. The following shows my /etc/devfs.rules
>
> <snip>
> [system=10]
> add path 'unlpt*' mode 0660 group cups
> add path 'ulpt*' mode 0660 group cups
> add path 'lpt*' mode 0660 group cups
> add path 'da[1,2,3,4,5,6,7,8,9]*' mode 0660 group users
> add path 'usb/*' mode 0660 group users
> add path 'usb/1.2.0' mode 0660 group cups
> </snip>
>
> The last line ensures the following in /dev/usb:
>
> crw-rw----   1 root  cups   - 0x5f Jun  9 12:19 1.2.0
>
> 1.2.0 is where ugen1.2 is pointing at:
>
> /dev/ugen1.2 -> usb/1.2.0
>
> All the above settings were done before I started to search for new
> printers or to add new printers with the web interface of cups. So no
> success so far.
>
> Are there any other options? My personal guess is that cups has some
> problems to use root peer credentials. The following error appears in the
> log file of cups (error_log):
>
> E [10/Jun/2014:11:35:14 +0200] [Client 14] Invalid peer credentials for "root" - got 8,
> expected 0!

On my system; while I was successful in installing my printer
(HP Laser && JetDirect). It doesn't work correctly (only prints 1 page).
All the information I found, regarding the error, blames ghostscript, and
[possible] version incompatibilities. Yet, they make no effort to reconcile
such issuers during install. Even after some 6yrs. I digress...

Here's the output from my install, with a [somewhat] working cups(d)
install -- in that the Printer && JetDirect were detected, and the
cups(d) runs:

# ps waux | grep cupsd
root       87930  0.0  0.1 19988  4364  ??  Is   10:34AM   0:00.77 /usr/local/sbin/cupsd -C
/usr/local/etc/cups/cupsd.conf

# cat /etc/passwd | grep cups
cups:*:193:193:CUPS Owner:/nonexistent:/usr/sbin/nologin

# cat /etc/group | grep cups
cups:*:193:

I only mention passwd(1), and group(5), because I want to address
the possibility that the database may NOT have been updated, given
the error that you mention above.

In hopes it helps you.

--Chris

>
>
> --
> Met vriendelijke groeten,
> With kind regards,
> Mit freundlichen Gruessen,
> De jrus wah,
>
> Wiel
>
> *************************************
>  W.K. Offermans
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