*BSD News Article 80211


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From: sam@wa4phy.async.com (S.W. Drinkard)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: SIO problems, need suggestion
Date: 7 Oct 1996 14:49:25 -0400
Organization: Not very often
Lines: 37
Message-ID: <53bjbl$cm@wa4phy.async.com>
NNTP-Posting-Host: wa4phy.async.com
Summary: Serial port (getty?) slows after few hours uptime.
Keywords: async, sio, modem, serial
X-Newsreader: NN version 6.5.0


Situation:

2.1.5-R, generic 386-sx clone, AST-4Port board, telebit trailblazer internal
modem on IRQ3, AST board on IRQ9, IDE, older SVGA card, WD8003 on IRQ4.
Both the telebit and AST board have 550AFN's on board.

Problem:

After running for anywhere from a 2-3 hours, up to maybe 16-18 hours, the
i/o from /dev/tty2 (Boca modem on AST port 1) becomes unserviceable due to
character i/o being slow to the point of not working.  Example, after what
problem is occuring, I issue command "cu -lcuaa2" and get a connect.  I
issue the command "at".  Characters are not echoed after keypress, but only
after the NEXT keypress, or a NL.  The same thing occurs when I dial out, or
dial in on that port, but instead of seeing input at "normal" rates, the
characters are either slow, or the port hangs.  Silo overflow reports occur
on console.  I'm still able to kill the getty associated with the port, and
init restarts it, but the i/o is still screwed up.  

System worked flawlesly with 2.1.0-R for nearly a year, same configuration.
This is primarily a mailbox, with minimal news, fed via uucp.

Request:

Share your thoughts on where the problem might be, or other insight as to 
what's happening.

Thanks.

-sam-

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