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Date:      Tue, 22 Jun 1999 13:31:33 -0400 (EDT)
From:      "Bill G." <billg@cyberwar.com>
To:        freebsd-hackers@freebsd.org
Subject:   Serial Console Wierdness
Message-ID:  <Pine.BSF.4.10.9906221322230.3019-100000@outland.cyberwar.com>

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I got a serial console working on COM2, to which I have connected
another FreeBSD box.  I connect with 'cu' fine, but I'm running into
a couple of problems which I haven't been able to find and answer
for.

o  When I connect, when the machine is first turned on, I get
   disconnected twice during the boot up sequence (cu reports
   Got hangup signal) -- looks like when the sio1 device is
   probed, and also when getty runs.

o  9600 was rather slow, so I changed it to 115200, which worked,
   however I had a few problems with terminal display -- any
   output that scrolls down past the bottom of the screen gets
   'garbled'.  (IE, I run clear; ls -l /  -- the first 23 lines
   look ok then it gets messed up).  Same results from console
   mode of my client machine and from an xterm.  I thought that
   115200 might be too fast, so I slowed it down to 38400, but
   same trouble.  I'm not sure if this occured at 9600.

Any thoughts / ideas / suggestions would be appreciated.  Thanks,


Bill



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