Date: Wed, 24 Apr 1996 18:15:09 -0600 (MDT) From: Stephen Fisher <lithium@cia-g.com> To: Dongil Shin <dshin@ponder.csci.unt.edu> Cc: freebsd-questions@FreeBSD.org, freebsd-hardware@FreeBSD.org Subject: Re: Boot floppy problem with Intel Atlantis motherboard (Mach64) Message-ID: <Pine.LNX.3.91.960424181321.12854E-100000@gallup.cia-g.com> In-Reply-To: <9604241357.AA18885@ponder>
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It looks like a conflit with COM4 and the ATI Mach64. The way FreeBSD probes for serial ports it causes the ATI (which has a bug, not freebsd) to respond as COM4. It locks up your screen (blank) and puts the monitor into power saving mode (if supported). To fix this quickly disable all of your com ports (at the boot: prompt type -c then at the prompt type "visual"). I believe the fix is in /usr/src/sys/i386/sio.c but I can't find where I patched it anywhere. On Wed, 24 Apr 1996, Dongil Shin wrote: > > I am having problem with boot floppy (for installation). > The booting process goes ok until it uncompresses the kernel. Then, > suddenly the monitor garbles and goes black. My configuration is > > 1) Intel Atlantis Motherboard with ATI Mach64 chip (2M DRAM) > 2) AMI BIOS 1.000.05.CL > 3) CTX 1765 GMe monitor > > Anybody had similar booting problem? Any suggestions or > helps are greatly appreciated. > > p.s. Win95 and DOS are ok. > > -- > ----------------------------------------------------------------------------- > PO BOX 13886 (Dongil Shin) INTERNET: dshin@cs.unt.edu > Dept. of Comp. Sci. WWW : http://poseidon.csci.unt.edu/shin.html > Univ. of North Texas VOICE : 817-565-2088 (Office) FAX: 817-565-2799 > Denton, TX 76203-3886 OFFICE : GAB 542A >
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