Is the PC overclocked in any way?
I had troubles with my 2940U2W in both Windows and Linux when I overclocked 
the Front Side Bus from 100MHz to 103MHz.
Seems the Adaptec cards can't handle *ANYTHING* over 33.3 MHz on the PCI bus.



At 02:53 PM 3/27/2000, Jeff Hill wrote:
>Thanks to everyone for the assistance.
>
>I did recompile the kernel with Translucent disabled (I don't know why
>it is enabled by default?). Unfortunately, this has not affected the
>problem.
>
>As for the Adaptec, I had checked on a hardware discussion list and
>understood that, while some Adaptec's were problematic, the unit I
>purchased (the 2940U2W with matching factory cables) was working well
>for several Linux users.
>
>However, it seems to me from my limited experience that the Adaptec may
>be the problem as it would fit the type of hanging that seems to occur
>(no error messages, everything just freezes -- possibly waiting for the
>Adaptec to send the data through).
>
>I am still unable to find any log or anyway of tracing the system hangs.
>I may try debugging on the SCSI (haven't a clue how) for a few days
>before trying to turn off RAID. Before buying another card (I have no
>others), I'll hope some reconfiguration of the Adaptec will do the
>trick. I hate to dump all that money down the drain.
>
>Thanks again to everyone for the assistance.
>
>Jeff Hill
>
>"m. allan noah" wrote:
> >
> > jeff- i am using 2.2.14 with mingo patch, and it is great. i have a 
> dozen or
> > so boxes, 512meg, SMP pIII 450, ncr scsi, etc in this config. all are fine.
> >
> > it would be interesting to see if raid is the issue, or your adaptec (i am
> > inclined to think the latter).
> >--<snip>--<

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