<strong>Report forwarded</strong> to <code>debian-bugs-dist@lists.debian.org, papowell@sdsu.edu, Sven Rudolph &lt;sr1@inf.tu-dresden.de&gt;</code>:<br>
<code>Bug#10386</code>; Package <code>lprng</code>.


debian-bugs-dist@lists.debian.orgpapowell@sdsu.eduSven Rudolph &lt;sr1@inf.tu-dresden.de&gt;

Sorry, this message was lost when this bug report was restored from a backup.


<strong>Acknowledgement sent</strong> to <code>Bradley Bosch &lt;brad@lachman.com&gt;</code>:<br>
New bug report received and forwarded.  Copy sent to <code>papowell@sdsu.edu, Sven Rudolph &lt;sr1@inf.tu-dresden.de&gt;</code>.


Bradley Bosch &lt;brad@lachman.com&gt;

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Date: Fri, 6 Jun 1997 00:44:00 -0500 (CDT)
From: Bradley Bosch <brad@lachman.com>
To: submit@bugs.debian.org
Subject: Lprng flushes serial ports too soon, truncating output
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Package: lprng
Version: 3.2.1-1

I had trouble with my serial connected HP Deskjet 500c printer not
printing the last several lines of text, or the last inch or so of
postscript.  I tracked this down to the serial port buffers being
flushed by lpd just after the last write to the tty and before the
printer has a chance to drain the buffers.

I switched from the old lpr and apsfilter (which had lots of bugs) to
lprng and magicfilter when I upgraded to Debian 1.3 and I still run
kernel version 2.0.28.  After fixing this serious bug and correcting
some other minor bugs by editing the /etc/lpd.conf file, I find this
combination works quite well.  Most of the lpd.conf file changes
required have already been reported as debian bugs, but I also noticed
that "default_remote_host=localhost" is required if your network
interface is unavailable (unplugged PCMCIA card for example).

Here is a patch which will fix the problem.  Note that we still flush
the tty in Print_abort() if the filters don't exit normally.  (which,
if I understand the comments in the change log, was the reason for
adding this code).

--- pr_support.c.old	Thu Jun  5 22:48:49 1997
+++ pr_support.c	Thu Jun  5 22:49:05 1997
@@ -224,7 +224,6 @@
 void Print_close(int timeout)
 {
 	DEBUG3("Print_close: closing printers");
-	Print_flush();
 	/* shut them all down first */
 	Close_filter( &Device_fd_info, timeout, "Print_close" );
 	Close_filter( &OF_fd_info, timeout, "Print_close" );


For completeness, here is the printcap entry:

ps|lp
    :rw:sh:
    :lp=/dev/ttyS0
    :sd=/usr/spool/lpd/djetc500
    :sy=19200 -echo -crmod -raw -oddp -evenp pass8 cbreak -ixon crtscts
    :af=acct:lf=log:ps=status
    :fx=flpv
    :if=/usr/local/lib/magicfilter/dj500-filter

Thanks,

--Brad Bosch
brad@lachman.com