Date: Tue, 15 Aug 1995 15:50:18 -0400 From: Alan Bawden <Alan@Epilogue.Com> To: FreeBSD-gnats-submit@freebsd.org Cc: Alan@Epilogue.Com Subject: i386/692: My modem won't let me turn my external cache off... Message-ID: <199508151950.PAA00363@beandorf.epilogue.com> Resent-Message-ID: <199508152000.NAA24888@freefall.FreeBSD.org>
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>Number: 692 >Category: i386 >Synopsis: My modem is not found if my external cache is disabled. >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Class: support >Submitter-Id: current-users >Arrival-Date: Tue Aug 15 13:00:04 PDT 1995 >Last-Modified: >Originator: Alan Bawden >Organization: ITS Preservation Society >Release: FreeBSD 2.0-RELEASE i386 >Environment: We own two Zoom VFP 28.8 (internal) modems installed in two different FreeBSD machines. The problem occurs identically on both machines. One runs FreeBSD 2.0 and the other runs 1.1.5.1. The 2.0 machine was purchased from Insight, it's mother board is a 4386-VC-V. The 1.1.5.1 machine also came from Insight, but has a slightly different mother board (I don't have the model number handy). >Description: If I disable the external cache (using the Setup menu before booting) then when FreeBSD boots it fails to find my modem. For example: Aug 15 12:53:47 beandorf kernel: sio2 not found at 0x3e8 If I enable the external cache (back to Setup again), it works perfectly: Aug 15 12:58:22 beandorf kernel: sio2 at 0x3e8-0x3ef irq 5 on isa Aug 15 12:58:22 beandorf kernel: sio2: type 16550A Everything else about the machine seems to work the same with or without the external cache. (Well, I suppose it might be slower without it...) The BIOS -is- able to find that serial port even when the cache is disabled (when it lists the ports it found at boot time), so I suspect that the modem itself is working just fine, it's just that there is something in the FreeBSD detection code that isn't working. Why should I want to turn off my cache? Well, I'm trying to track down what I suspect is a much more serious FreeBSD bug that occasionally seems to corrupt my files (and it's happening more and more often to the point where it is seriously interfering with my work), and I have been told that some of these Insight-supplied mother boards have some kind of a problem with the external cache, so I would like to disable it to see if that might actually be my problem. But I depend on the modems, so I can't afford to do anything that will disable them. >How-To-Repeat: I suppose you could buy the same hardware I've got and it might happen for you too! >Fix: I would like to get FreeBSD to do a better job at recognizing that modem. I'd be happy to do further experiments to help someone to get a more precise handle on what going on -- just ask! >Audit-Trail: >Unformatted:
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