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Path: utzoo!mnetor!seismo!lll-crg!styx!ames!ucbcad!ucbvax!H.CS.CMU.EDU!Rudy.Nedved
From: Rudy.Nedved@H.CS.CMU.EDU
Newsgroups: mod.computers.laser-printers
Subject: Re: Transcript v2.0 bug
Message-ID: <1986.11.20.23.25.14.Rudy.Nedved@h.cs.cmu.edu>
Date: Thu, 20-Nov-86 18:41:43 EST
Article-I.D.: h.1986.11.20.23.25.14.Rudy.Nedved
Posted: Thu Nov 20 18:41:43 1986
Date-Received: Mon, 24-Nov-86 21:58:23 EST
References: <8611202158.AA21420@weyl.Berkeley.EDU>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 50
Approved: laser-lovers@washington.arpa

Rusty,

The "correct" fix which worked for over a week was to simply
commented out or delete the longjmp(), setjmp() and remove
the spin loop on revdone with the pause in it. The code looks
like the following:
    /* do page reversal if specified */
    if (reversing = ((reverse != NULL) && canReverse)) {
	debugp((stderr,"reversing\n"));
#ifndef CMUCS
	VOIDC setjmp(waitonreverse);
	if (!revdone) {
	    VOIDC signal(SIGEMT, reverseready);
#endif CMUCS
	    if (pipe (fdpipe)) pexit2(prog, "reverse pipe", THROW_AWAY);
		.
		.
		.
#ifndef CMUCS
	    while (TRUE) {
		if (revdone) break;
		pause();
	    }
	}
	VOIDC signal(SIGEMT, SIG_IGN);
#endif CMUCS
	debugp((stderr,"%s: reverse feeding\n",prog));
    }
I commented out the signal in psrv and the longjmp in reverseready(). I
was not looking for a truly clean fix....

I received some changes today from Andy Shore but because I don't
understand the legalities of purchased software...I will not send
the changes. I saw a comment that ron@nprdc had this problem and
a fix....this seems to be the fix Andy Shore picked up.

As for the "errsXXXXX" file (where XXXXXX is the lpd pid also found in the
lock file), they are created by the 4.3BSD version of lpd for the input
filter. When the input filter terminates, lpd copies the file onto the end of
the logfile if it exists....and deletes the file. If you cancel a print
request getting processed, many times the errsXXXX file will be left around.

I have a community of 3000 or so people using about 14 LaserWriters+ and two
LinoType 300s directly, by Scribe, MacDraw or by TeX. One of the failure
modes seems to be a spinloop for the PostScript machine....jobtimeout or
whatever does not seem to be kicking it. Yet a power cycle of the printer
does the job.

Cheers,
-Rudy