Re: [PARPORT] How to slow down parport? (and a note to Epson 740 owners)

From: J. Scott Berg (
Date: Mon Jun 11 2001 - 22:20:59 EDT

  • Next message: Michael Lindner: "Re: [PARPORT] How to slow down parport? (and a note to Epson 740owners)"

    On Sat, 9 Jun 2001, Michael Lindner wrote:

    > I agree, it IS wierd, and I spoke too soon - not having repeated all the tests
    > I made. What I did was to run "gs ..." into a file, and send the file
    > directly to /dev/lp0 in 1000 byte chunks at 1/10 second intervals. That worked,
    > whereas "lpr" did not, so I assumed it was parport's fault. What I
    > didn't try again, and should have, was "gs ... > /dev/lp0". Voila, it
    > works! So, the problem now appears to lie with lpd and NOT parport. My
    > apologies. Any clues on what to do now?

    If I had to guess, I'd say you had gs-6.50 installed and were printing
    a PostScript file produced by the Acrobat reader. If so, you have a
    known problem. If you look at the command that lpd executes, it is

    gs ... -

    i.e., the input is coming from stdin. gs has a bug with certain files
    coming on stdin, in particular those produced by Acrobat reader. If
    you do the same command line with a filename argument (as you did), it
    works just fine. I would try upgrading to gs-7.00 (although that has
    its own collection of bugs) and see if that works.

    I'm not sure this explains everything you're seeing, but it may be
    part of it.

                                    -Scott Berg

    J. Scott Berg                 
    12 ROLLING HILLS DR                     (631) 924-8613
    RIDGE NY  11961

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