Date: Thu, 21 Mar 1996 10:10:21 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: russ@ism.net (Russ Pagenkopf) Cc: lithium@cia-g.com, russ@ism.net, freebsd-hardware@FreeBSD.org Subject: Re: help with new motherboard Message-ID: <199603202340.KAA08708@genesis.atrad.adelaide.edu.au> In-Reply-To: <v01530500ad746f02fa4c@[205.199.12.47]> from "Russ Pagenkopf" at Mar 19, 96 08:11:05 am
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Russ Pagenkopf stands accused of saying: > > But both Michael Smith <msmith@atrad.adelaide.edu.au> and Stephen Hocking > <sysseh@devetir.qld.gov.au> asked: > > >You don't say what video card; my guess is you have a Mach64 in there > >somewhere. > > Which is correct, the motherboard manual says it's a Mach64-CT SVGA > graphics controller. Is this the problem? Yes. The Mach64 has a bug in that it is sensitive to the way that FreeBSD attempts to disable com4. It's necessary to do that to be able to probe com2 successfully if com4 is sharing an interrupt with it, but the Mach64 (incorrectly) responds to this operation. Your machine isn't actually hanging, the mach64 is. The short-term fix is to disable _all_ of the 'sio' devices. Make sure you install the kernel source when you do your install. Once you're installed OK, go to /sys/i386/isa, edit sio.c and remove the last number from the definition of 'likely_com_ports' and recompile your kernel as per the handbook. This will stop your '64 from hanging. > Russ Pagenkopf (russ@ism.net) -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] Collector of old Unix hardware. "Where are your PEZ?" The Tick [[
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