Date: Thu, 17 Aug 2000 15:24:14 -0700 From: "Ronald F. Guilmette" <rfg@monkeys.com> To: sheldonh@FreeBSD.org Cc: freebsd-bugs@FreeBSD.org Subject: Re: kern/14787: /dev/lpt0 doesn't work unless/until you do `lptcontrol -e' Message-ID: <49753.966551054@monkeys.com> In-Reply-To: Your message of Thu, 17 Aug 2000 02:53:06 -0700. <200008170953.CAA18095@freefall.freebsd.org>
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In message <200008170953.CAA18095@freefall.freebsd.org>, you wrote: >Synopsis: /dev/lpt0 doesn't work unless/until you do `lptcontrol -e' > >State-Changed-From-To: open->feedback >State-Changed-By: sheldonh >State-Changed-When: Thu Aug 17 02:52:14 PDT 2000 >State-Changed-Why: >Waiting to hear what Ronald has to say about Mark's >input. > > >http://www.freebsd.org/cgi/query-pr.cgi?pr=14787 OK. Sorry. I didn't realize that anybody was waiting on me. The bottom line is that _all_ of the problems I ever had sending data to /dev/lpt0 (under FreeBSD) occured some long time ago, and although I can no longer remember all of the details, the one thing that I do seem to clearly recall is that in the end, I finally isolated the problem(s) down to the point where I was 100% sure that it was just all due to some apparent subtle problem with the on-board parallel port hardware on one specific motherboard I had in one specific system, i.e. a Tekram P5V30-B4 motherboard. Subsequent testing with the exact same version of FreeBSD, but loaded onto a system that had a somewhat more modern (and less flaky or more standard-conforming?) ASUS motherboard indicated that all problems I had previously experienced in sending data to my printer vanished completely with the ASUS motherboard. I wish that I had a better memory of all of this, but I really don't remember anything more than that. I chalked it all up to some obscure hardware nit in the on-board parallel port(s) of the Tekram board, and from then on I just kept my printer hooked up to the ASUS-base system and I have been a happy camper ever since. (I've never experienced a single problem of any kind sending data to /dev/lpt0 from the ASUS-based system. It just works. Gosh how I wish everthing was like that!) Note that this does not in any way preclude the possibility that there may indeed be other problems, e.g. relating to the configuration of the parallel port driver in the default kernel configuration file. But if any such additional problems do exist, I am not aware of them, have not been affected by them, and would have no easy way of knowing whether or not some suggested fix would be appropriate for those or not. Sorry that I cannot be of more help. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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