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Newsgroups: comp.unix.bsd Path: sserve!manuel!munnari.oz.au!spool.mu.edu!sdd.hp.com!decwrl!csus.edu!netcom.com!alm From: alm@netcom.com (Andrew Moore) Subject: Re: X386 xdm with crypt, other tools, printer EXPERIENCES Message-ID: <!6sn-3+.alm@netcom.com> Date: Wed, 09 Sep 92 23:22:56 GMT Organization: Netcom - Online Communication Services (408 241-9760 guest) References: <1992Sep9.122332.22785@cs.tu-berlin.de> Keywords: xdm X386 crypt lpt.c Lines: 21 In article <1992Sep9.122332.22785@cs.tu-berlin.de> engel@opal.cs.tu-berlin.de (Christian Engel) writes: >Printer Support >=============== > >I had many problems using the original lpt.c driver although patched with >lpt-haugh and the lp.c drivers. >Printing of normal ascii files was ok using the lp.c driver. But when I tried to >print a .dvi-djc file (Deskjet 500 output from dvi), character losses and even >crashes (lpt.c) occurred. >Switching off the printer caused a reboot. >I could solve the problem for lpt.c using an output filter, that flushed the >output and waited for a while (usleep) after a certain amount of characters were >sent to the printer. >I didn't need to use this filter for the new version of lpt.c that does busy >waiting. I had similar problems with the Eric Haug patches to the lpt driver. But I have not had any such problems since I recompiled lpd.c (in /usr/src/usr.sbin/lpr/lpd). BTW, what does an lpt driver without interrupts buy me? What is the cost? -Andrew Moore <alm@netcom.com>