July 2001
J-P Berger

iota0 Printing Tricks
---------------------

Here is a compilation of tricks used on the mountain when the printer
is unaccesible from iota0 (with a possible contamination to the other
machines).

iota0 is the Linux box.

A) **** E. Pedretti (june 2001) ******

If printing refused from iota0
(daemon down or connection refused for example).

cd /var/spool/

remove any .lock and .lock.backup file

then 

cd /etc/rc.d/init.d

lpd stop 

then

lpd start

(you can have look at lpd script to understand the lpd script)

additionally start down/up the printer   

This method should be similar if printing problems from the Sun
station

B) **** J. Monnier (december 2000) *********

PROBLEM:  Printer will not work from linux machine. 

POSSIBLE SOLUTION: This method is not bulletproof, but seems to
work. There may be extraneous steps, and this method will be
simplified if it proves possible.

1. Log-in as superuser (ask around for password if you don't know it). 

2. kill the print deamon. 
  Find the number of the process: 

iota0# ps -aux | grep lpd 

   The process <number> is the one following 'root' 

iota0# kill -9 <number> 

3. Completely empty the print queue using: iota0# lprm -

4. Restart printer deamon iota0# lpd
  

C) ********* M. Lacasse (April 2000) **********

if the Printer queue is jammed 

i.e. you are getting bad files with zero length - use /usr/sbin/lpc to
        control queue do a "clean all" and a "restart all" seems to be
        working

you need to be superuser to do this the password is in the IOTA manual
section 5.2