[K12OSN] Local priner problem - SOLVED

Wed Mar 6 09:25:08 UTC 2013

Hello All,

Many thanks to All who sent me advice. Owing to this I solved this problem.
For forcing my printer to cooperation I made:

lts.conf
    PRINTER_0_DEVICE         = /dev/usb/lp0
    PRINTER_0_PORT         = 9100
    PRINTER_TYPE         = S

and jetpipe process is started as follow:

/usr./sbin/jetpipe -f /dev/usb/lp0

My printer prints with original jetpipe included in thin client, and with p910nd package got from http://p910nd.sourceforge.net/

That's all.

Thanks again for any help.

Best regards,
Radek

----

    Debug of [..]/sbin/jetpipe revealed line 50: only '/dev/tty..' are
    serial, devicetype 'S'. Other names will be parralel devicetype 'P'.

    jetpipe:

           50         if devicename[:8] == '/dev/tty':    # This should catch regular serial and USB serial

    [..]

           59             self.devicetype = 'S'
           60         else:
           61             self.device = open(devicename, 'wb')
           62             self.devicetype = 'P'

    I 'eliminated' this error and useing '/dev/usb/lp0' jetpipe threw an
    exception:

    serial.serialutil.SerialException("Could not configure port:(25,
    'Inappropriate ioctl for device')

    The comment on line 307 (serialposix.py) might be your answer.

          305         try:
          306             iflag, oflag, cflag, lflag, ispeed, ospeed, cc = termios.tcgetattr(self.fd)
          307         except termios.error, msg:      # if a port is nonexistent but has a /dev file, it'll fail here
          308             raise SerialException("Could not configure port: %s" % msg)

    Why the prot would be nonexistent I do not know; /dev/usb/lp0 gets
    created when a printer is connected to a usb port.

    Jaap

    On 03/05/2013 02:11 PM, Radek Bursztynowski wrote:

      Thanks a lot for all help, but still nothing. Let me explain my today exercise.

The first I used Julius's advice:
       PRINTER_0_TYPE=S
        PRINTER_0_DEVICE="/dev/usb/lp0"  # /dev/usblp0 is symbolic link to /dev/usb/lp0
        PRINTER_0_WRITE_ONLY=Y

Nothing. 
telnet 192.168.1.10:9100 
connection refused.

So, I started on thin client (shell console) jetpipe manually. 

Now telnet 192.168.1.10 9100 
connects, but still I couldn't print.

So I added /usr/sbin/jetpipe to /etc/rc.d/rc.local. Now every time telnet 192.168.1.10 9100 connects, but the printer doesn't print.

I changed PRINTER_0_TYPE=S with "U", still nothing.

I installed using chroot python-daemon, still nothing.
ps aux | grep python*
shows that any python process isn't running.

But very interesting - when I added this printer connected to thin client using system-config-printer on my LTSP server and I try to print test page, I can read the messages that printer is connected, next - the file sent to the printer, next "waiting for finishing printing job", and next "ready to use". But my printer didn't print anything.

The advice with /dev/lp0 I tried too - still noting.

When I try to add this printer on Windows computer using TCP/IP port (192.168.1.10:9100) I can see the message, that the printer is not connected (still telnet 192.168.1.10 9100 connects).

Any other advice, please?

Best regards,
Radek

----- Original Message -----
From: "Santiago Mera" <santiago.mera at dusa.com.uy>
Sent: Mon, 3/4/2013 8:54pm
To: "Support list for open source software in schools." <k12osn at redhat.com>
Subject: Re: [K12OSN] Local priner problem

Yes, that would usually be the case I think.What happened to us with parallel printers is that we see no device in the /dev directory that corresponds to the printer (no /dev/lp0 or similar). So no matter what you put in PRINTER_0_DEVICE, jetpipe will complain about not finding the device and dies.
We ended up not bothering about parallel printing and are now using serial or usb.
----
Ing. Santiago Mera
Droguería Uruguay S.A.
Tel: (+598) 2408 7505 int. 264

From: "Burke Almquist" <burke at thealmquists.net>
To: "Support list for open source software in schools." <k12osn at redhat.com>
Sent: Monday, March 4, 2013 5:30:55 PM
Subject: Re: [K12OSN] Local priner problem

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Mar 4, 2013, at 11:56 AM, Santiago Mera wrote:

        Hello Radek, 
I have the same server as yours. The first time I tried to print locally I had the similar problems (jetpipe wasn't running).

I solved this by installing the python-daemon package in the chroot.
I'm still unable to print to a printer connected to the thin client via the parallel port though.

      I think for parallel port printers you need to use
 PRINTER_0_DEVICE          = "/dev/lp0"                 instead of "/dev/usblp0"
    PRINTER_TYPE                  = P                                 instead of U or S

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