From owner-freebsd-scsi Mon Jan 19 03:10:05 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id DAA16764 for freebsd-scsi-outgoing; Mon, 19 Jan 1998 03:10:05 -0800 (PST) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from penguin.wise.edt.ericsson.se (penguin-ext.wise.edt.ericsson.se [194.237.142.5]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id DAA16684; Mon, 19 Jan 1998 03:09:49 -0800 (PST) (envelope-from seb@erix.ericsson.se) Received: from super.du.etx.ericsson.se (root@super.du.etx.ericsson.se [150.236.14.16]) by penguin.wise.edt.ericsson.se (8.7.5/8.7.3/glacier-1.12) with ESMTP id MAA04813; Mon, 19 Jan 1998 12:09:46 +0100 (MET) Received: from scotch.du.etx.ericsson.se (seb@scotch.du.etx.ericsson.se [150.236.14.76]) by super.du.etx.ericsson.se (8.8.8/8.8.8/erix-1.1) with ESMTP id MAA06378; Mon, 19 Jan 1998 12:09:46 +0100 (MET) Received: by scotch.du.etx.ericsson.se (8.8.5/client-1.4) id MAA17451; Mon, 19 Jan 1998 12:09:45 +0100 (CET) Date: Mon, 19 Jan 1998 12:09:45 +0100 (CET) Message-Id: <199801191109.MAA17451@scotch.du.etx.ericsson.se> From: Sebastian Strollo To: freebsd-scsi@FreeBSD.ORG, freebsd-hardware@FreeBSD.ORG Subject: Re: running 2.2.5-RELEASE on a ASUS P2L97-S Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hi again Earlier I wrote: > I am having trouble with a newly purchased machine that I have put > together. Below is the specs. At first the system would completely > lock up (i.e. only respond to the Mighty Big Reset Button) when > putting load on the SCSI disk. >... [lengthy description of the machine and the problem omitted] Thank you for all your suggestions! I tried a couple of new combinations of memory chips and cards, but ended up replacing the motherboard, and whaddayanow, now the machine runs like a charm! Hardware errors like these are scary. ;-( David Greenman , wrote: > ... > > 1 (one) 64MB SDRAM 100MHz module > > Probably a defective or incompatible SDRAM module. I've heard a lot of > reports about problems with SDRAM (as well as having my own bad experiance). and Steve Passe wrote: > > ASUS specifies the "low chip count" memory parts, your DIMMs may have too > many chips on them to drive properly... When I put 64MB DIMMs on my L97 > I had to pay more for the DIMMs with the high-density chips to avoid this. > Before you ask, I don't know the max number, and couldn't find it in > the manual. I trusted my vendor to spec the right parts... Which got me to suspect the 64MB module, which is one of these "double height" thingies with a lot of chips on them. (A FOAF also suggested that these were actually non standard, since the leads to the chips got too long.) However I also had two 32MB SDRAM modules, and when I used those the machine froze as well. The Classiest Man Alive , wrote: > > Based on the limited information you provided, the only thing that I find > particularly suspect is the IRQ conflict with the ethernet card and the > SCSI controller. Have you tried this test without the ethernet card > present? No, I hadn't at first. The conflict got me suspicious as well, and after reading the motherboard manual a bit more carefully I found in a small footnote: "PCI slot 4 share the same interrupt number as the onboard SCSI so PCI slot 4 card must be able to share an INT# or make sure that it does not use an INT# at all". This is the slot I had the ethernet card in, now I don't. However I got curious when we replaced the motherboard so I did put the ethernet card in there to try it out, and it seems to work ok to share the interrupt. I ran a couple of "bonnie" (on the SCSI disks) at the same time as transferring the contents of a CDROM (also on SCSI) to another host on the network, without any crashes or lockups.