*BSD News Article 60234


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From: lliu@u.washington.edu (L. Liu)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: FreeBSD 2.1 can't boot with serial ports enabled
Date: 22 Jan 1996 08:20:48 GMT
Organization: University of Washington
Lines: 9
Message-ID: <4dvhd0$6lv@nntp5.u.washington.edu>
NNTP-Posting-Host: homer03.u.washington.edu
NNTP-Posting-User: lliu

My motherboard has an on-board "Multi-I/O" chip, UMC UM8663, which supports
two 16550-compatible serial ports and one parallel port. With the serial
ports enabled, FreeBSD 2.1 won't boot. The screen goes blank and the
system hangs. I have to use the "-c" option to disable the serial ports so
I can install FreeBSD and the system can boot after installation. I'm
wondering if anyone else has the same problem. Is there a patch, which can
make FreeBSD properly probe the UMC chip? Thanks for any help.

Eugene Liu