[1274] in linux-scsi channel archive
Re: Sync speed negotiation
daemon@ATHENA.MIT.EDU (Alan Cox)
Fri Jan 17 16:26:18 1997
To: submit-linux-dev-scsi@ratatosk.yggdrasil.com
From: alan@lxorguk.ukuu.org.uk (Alan Cox)
Date: 17 Jan 1997 21:20:22 -0000
In article <Pine.LNX.3.93.970110071518.8521G-100000@kjahds.com>,
Kenneth Albanowski <kjahds@kjahds.com> wrote:
>helpful with: currently the sync negotiation in the aic7xxx driver (and
>perhaps others, I haven't checked) chooses the highest speed that the SCSI
>device and the controller can agree on. Unfortunately, my system was
This is correct behaviour
>completely unable to boot at the 10Mhz it locked into. Only with some
>major juggling was I able to compile a kernel that only did 3.6Mhz
>negotation, and could thus boot.
You should fix your cabling and terminators, and if necessary return the
card and the controller. The whole point of the disk and controller
working out how fast they can go is to automate all of this. Unfortuantely
it doesn't cope with the dodgy cable/termination case where the wire is
the limit. Nor should it..
Alan
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