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Date: Sat, 7 Aug 1999 22:41:31 -0700 (PDT)
From: George Mitchell <george@m5p.com>
Reply-To: george@m5p.com
To: FreeBSD-gnats-submit@freebsd.org
Subject: Parallel port printer driver is flaky
X-Send-Pr-Version: 3.2

>Number:         13021
>Category:       i386
>Synopsis:       Parallel port printer driver is flaky
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Aug  7 22:50:00 PDT 1999
>Closed-Date:    Sun Aug 29 13:12:27 PDT 1999
>Last-Modified:  Sun Aug 29 13:20:01 PDT 1999
>Originator:     George Mitchell
>Release:        FreeBSD 3.2-RELEASE i386
>Organization:
Mitchell Voting Products, Inc.
>Environment:

	Pentium 166
	Parallel port on ASUS TXP4 motherboard
	Hewlett-Packard DeskJet 500C

>Description:

	Graphical output, such as from ghostscript, works briefly
	(for about 1/4 inch of output), then printer drops back
	into text mode as if reset by the parallel port, and the
	remainder of the output consists of random garbage.

	Problem appeared when I upgraded from FreeBSD 2.2.7 to
	FreeBSD 3.2.  I tried to configure the deprecated olpt
	device, but it is not there (despite a reference to it
	in the LINT system configuration file).

>How-To-Repeat:

	Send output from ghostscript to a non-PostScript printer
	without a page buffer (such as a DeskJet) on a parallel port.

>Fix:
	
	I wish I knew.


>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: steve 
State-Changed-When: Sun Aug 29 13:12:27 PDT 1999 
State-Changed-Why:  
The originator noted that he was able to work around the problem by 
using 'ppc0 flags 0x45' which effectively disables ECP and FIFO for 
the port. 

From: Steve Price <sprice@hiwaay.net>
To: freebsd-gnats-submit@freebsd.org
Cc:  
Subject: Re: i386/13021: Parallel port printer driver is flaky (fwd)
Date: Sun, 29 Aug 1999 15:11:39 -0500 (CDT)

 ---------- Forwarded message ----------
 Date: Sat, 14 Aug 1999 01:21:21 -0700 (PDT)
 From: George Mitchell <george@m5p.com>
 To: gnats-admin@freebsd.org
 Subject: Re: i386/13021: Parallel port printer driver is flaky
 
 I can "fix" this problem by setting the ppc0 flags to 0x45, disabling the
 ECP and FIFO features of the port.  Apparently, when ECP and the FIFO
 features get turned on and the port is talking to an ordinary printer,
 characters get randomly dropped ...                      -- George
 
 
 
>Unformatted:
