*BSD News Article 76938


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From: pleung@cs.buffalo.edu (Patrick Leung)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Problem using Serial Ports
Date: 26 Aug 1996 16:53:43 GMT
Organization: University at Buffalo
Lines: 18
Message-ID: <4vskqn$t95@prometheus.acsu.buffalo.edu>
NNTP-Posting-Host: gagarin.cs.buffalo.edu
NNTP-Posting-User: pleung
X-Newsreader: TIN [version 1.2 PL2]

Hi,
	I installed both Linux and FreeBSD recently.  My serial ports work
just fine with Linux, but not on FreeBSD.  Each time FreeBSD tries to boot
up my computer and detect the serial ports, my computer locks up and 
lots of dashed lines fly around on my screen.  The only way I can get 
FreeBSD to boot the kernel all the way through to the login prompt is by
disabling detection of my serial ports from the kernel config.
I configured my kernel to use only the minumum number of drivers necessary:
wd0 [harddrive], fd0 [floppy], sc0 [console].
I have also tried FreeBSD on two of my friends computers, and got similar
results.  Does anyone know the cause of the problem and know the solution?
BTW, FreeBSD works fine with my printer [parallel] ports.
	Please either post or email your replies.

thanks,
Patrick