Date: Mon, 19 Jan 1998 12:09:45 +0100 (CET) From: Sebastian Strollo <seb@erix.ericsson.se> To: freebsd-scsi@FreeBSD.ORG, freebsd-hardware@FreeBSD.ORG Subject: Re: running 2.2.5-RELEASE on a ASUS P2L97-S Message-ID: <199801191109.MAA17451@scotch.du.etx.ericsson.se>
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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 <dg@root.com>, 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 <smp@csn.net> 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 <ksmm@cybercom.net>, 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.
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