On Mon, 1 May 2000, Jeff Hill wrote:
> Based on advise from the list, I ordered a custom built cable from CS
> Electronics asking for the best quality they had: 3' LVD teflon with
> active negation terminator. A $125US later, system still hangs. Bummer.
>
> I have now spent five weeks off-and-on trying to find out why the system
> with a new Adaptec 2940U2W and 2xSegate LVD drives hangs momentarily
> (using 2.2.14 kernel with raid-2.2.14-B1 patch). The closest thing I
> have to a cause is that it seems to happen only when there is a load
> (medium to heavy) on the server and it happens less when I reduce the
> speed in the SCSI controller from 80Mb to 40Mb.
Just a WAG, but I fought a similar-sounding problem here on my ASUS P2B-DS
system board. After much head-banging, it turned out that I was setting
the CPU mtrr registers such that they were write-gathering over the
memory-mapped IO region of the SCSI controller! For some reason, the
address range used by my AGP video board had changed underneath me and I
hadn't noticed.
The symptoms were exactly what you describe in your posting. Check
/proc/pci and your init scripts carefully.
Steve
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