Very Computer

I've got a problem with a printer hooked up to the parallel port (an
epson lq-570, but it happens with others as well). The lpd send output
to the printer even if it is switched off. It behaves ok if I manually
set the printer to the offline state. The "paper out" status appears
in syslog as the infamous "lp1 on fire" message, so this message is
apparently not interpreted correctly. I'm using the polling driver on
lp1, hex address 378, so I guess that's pretty much standard.

I wonder: How can I prevent the driver from printing when the printer
is switched off apart from killing lpd?

Thanks in advance for any help,

        hoover

: I wonder: How can I prevent the driver from printing when the printer
: is switched off apart from killing lpd?

Try tunelp

tunelp [-o on] or [-a on] or [-C on]   should help

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##         http://phoenix.oulu.fi/~tomilepp        ##

Try not to print to the printer when it is switched off !!
That should fix it :-)

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ray

Quote:> :dear netters,
> :
> :I've got a problem with a printer hooked up to the parallel port (an
> :epson lq-570, but it happens with others as well). The lpd send output
> :to the printer even if it is switched off. It behaves ok if I manually
> :set the printer to the offline state. The "paper out" status appears
> :in syslog as the infamous "lp1 on fire" message, so this message is
> :apparently not interpreted correctly. I'm using the polling driver on
> :lp1, hex address 378, so I guess that's pretty much standard.
> :
> :I wonder: How can I prevent the driver from printing when the printer
> :is switched off apart from killing lpd?

> Try not to print to the printer when it is switched off !!
> That should fix it :-)

Uwe, I've seen this problem myself.  Now that someone else is
experiencing it I'll look into it. When do you get the LP1 on fire
message?  Do you get it when the printer is off line or when the power is
off or both?

Cheers, Simon.

Quote:>> :I wonder: How can I prevent the driver from printing when the printer
>> :is switched off apart from killing lpd?

>> Try not to print to the printer when it is switched off !!
>> That should fix it :-)
>Very funny, not. This is a perfectly good question - just because YOU
>don't know the answer doesn't mean you need to take the piss.  What a
>muppet you are.

So what do you want ?, an error to come back to the application that the
printer is switched off, or what you just want the print to go into a
bit bucket without any messages ?

If the printer is switched off and you decide not to print what is in the
spooler than just use "lprm" to get rid of the appropriate entry.

Again sorry .... or am I still missing the point ?

Steve Rance

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Quote:> > :dear netters,
> > :
> > :I've got a problem with a printer hooked up to the parallel port (an
> > :epson lq-570, but it happens with others as well). The lpd send output
> > :to the printer even if it is switched off. It behaves ok if I manually
> > :set the printer to the offline state. The "paper out" status appears
> > :in syslog as the infamous "lp1 on fire" message, so this message is
> > :apparently not interpreted correctly. I'm using the polling driver on
> > :lp1, hex address 378, so I guess that's pretty much standard.
> > :
> > :I wonder: How can I prevent the driver from printing when the printer
> > :is switched off apart from killing lpd?

   > :I've got a problem with a printer hooked up to the parallel port (an
   > :epson lq-570, but it happens with others as well). The lpd send output
   > :to the printer even if it is switched off. It behaves ok if I manually

Get the latest tunelp from tsx-11.mit.edu or any of its mirrors, and
read the man page.  It explains that there is an option that can be
set in newer kernels (you use the tunelp program to do this) that
tries to detect when the printer is turned off.

NOTE: Not all printers/ports behave well when they are turned off;
that's outside spec, as I recall.  If it doesn't work for you, you
will have to come up with a patch that happens to work with your
printer (if that is possible; it isn't for some combinations) or you
will be SOL.

michaelkjohnson

1. Get tunelp (from util-linux-2.2) if you haven't already got it.
2. man tunelp (you are looking for the "careful" flag among others)

ray

Quote:>> > :I wonder: How can I prevent the driver from printing when the printer
>> > :is switched off apart from killing lpd?

> I faced this problem myself too :(
> I know that it should work and my friend has configuration in
> which it works fine (tested today). My configuration files
> seemed to be like his, but I didn't get that spooling to work,
> when printer is offline or powered off. It just losts every
> printing job. Any ideas?