From owner-freebsd-questions Thu Nov 23 02:05:46 1995 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id CAA29422 for questions-outgoing; Thu, 23 Nov 1995 02:05:46 -0800 Received: from mail.swip.net (mail.swip.net [192.71.180.65]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id CAA29405 for ; Thu, 23 Nov 1995 02:05:25 -0800 Received: by mail.swip.net with UUCP (8.6.8/3.01) id LAA21233; Thu, 23 Nov 1995 11:12:52 +0100 Received: from lda.leissner.se by lda.leissner.se id aa08203; 23 Nov 95 11:05 SNT X-Sender: pol@lda X-Mailer: Windows Eudora Pro Version 2.1.2 Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Date: Thu, 23 Nov 1995 11:57:22 +0100 To: Michael Smith From: Peter Olsson Subject: Re: FreeBSD-boot crashes ICL-machines, anyone else had this? Cc: questions@freebsd.org Message-ID: <9511231105.aa08203@lda.leissner.se> Sender: owner-questions@freebsd.org Precedence: bulk At 01:35 1995-11-23 +0000, you wrote: >Peter Olsson stands accused of saying: >> >Do the crashing machines have S3-based video hardware? >> >> The P100 has mac64, I don't know about the P75. Doesn't seem like this is >> the problem (?) > >The problem is that a number of video cards (many S3-based, for starters) >occupy the same port addresses as the fourth serial port. In order to >successfully probe the second serial port in a four port system, it is >necessary to write to the fourth port, which can upset some video adapters, >possibly causing the system to crash. I tried disabling several combinations of serial ports, but it didn't help. Immediately after I go out of config-mode, the screen goes all black and the computer hangs completely. The only combination that works is to disable all four serial ports. Thanks anyway for your good suggestions! ----------------------------------------------------------------- Peter Olsson Email: pol@leissner.se Leissner Data AB Telnr: 0520 - 490 511 direkt Box 912 Telnr: 0520 - 200 00 v{xel 461 29 TROLLH[TTAN Faxnr: 0520 - 200 89