>Number:         625
>Category:       port-i386
>Synopsis:       Data corruption when sending data to printer via lpt0
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    gnats-admin (GNATS administrator)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Dec 10 06:35:04 1994
>Originator:     Martin Lubitz
>Organization:
____________________________________________________________________
 Martin Lubitz    lusi@lusi1.isdn.cs.tu-berlin.de (NeXTmail welcome)
 Berlin - Germany >>>>>>> 2b || !2b; that is the question... <<<<<<<
>Release:        1.0
>Environment:
Machine: 80486/33 EISA, 4 MB RAM
         Standard (no-name) IO-Board (2S 1P 1G)

System: NetBSD lusi1.isdn.cs.tu-berlin.de 1.0 NetBSD 1.0 (LUSI1) #2: Sat Dec 10 01:11:01 CET 1994 root@lusi1.isdn.cs.tu-berlin.de:/usr/src/sys/arch/i386/compile/LUSI1 i386


>Description:
	When sending data to my printer (HP Laserjet 4) via the parallel
	port lpt0 (at 0x378, irq 7) it gets corrupted to a certain degree.
	The printer displays Error 22 which indicates a IO buffer overflow.
	It will continue to print but seems to lose some data.
	This happens mostly with graphics (large amount of data) or
	multi page documents.
	The problems seems to be uninfluenced by system load and/or
	network traffic.
	The same hardware configuration was working flawlessly with
	the lpa driver of NetBSD 0.9 which seems not to be included
	anymore.
>How-To-Repeat:
	Send some data with lpr to the printer on the parallel port lpt0.
	My /etc/printcap:

#	@(#)printcap	5.3 (Berkeley) 6/30/90

lp|local line printer (Standard):\
	:lp=/dev/lpt0:sd=/usr/spool/lpd:\
	:lf=/dev/console:\
	:if=/usr/local/bin/crnlmap.filter:\
	:sh:

hplj4|Printer for PC clients:\
	:lp=/dev/lpt0:sd=/usr/spool/lpd:\
	:lf=/dev/console:\
	:if=/usr/local/bin/gsfilter:\
	:mx#0:sh:sf:

>Fix:
	Unknown.
>Audit-Trail:
>Unformatted: