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Date: Wed, 4 Feb 1998 10:48:31 -0600 (CST)
From: "Daniel M. Eischen" <deischen@iworks.InterWorks.org>
To: freebsd-questions@FreeBSD.ORG, jm@pluriproj.pt
Subject: Re: Adaptec 2940 refuses Wide negotiation
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> I'm not managing to work with an Adaptec Ultra Wide SCSI.
>
> Kernel messages are:
>
> Feb  4 10:05:53 bigbang /kernel: ahc0 <Adaptec 2940 Ultra SCSI host
> adapter> rev 1 int a irq 11 on pci0:13
> Feb  4 10:05:53 bigbang /kernel: ahc0: aic7880 Wide Channel, SCSI
> Id=7, 16 SCBs
> Feb  4 10:05:53 bigbang /kernel: ahc0 waiting for scsi devices to
> settle
> Feb  4 10:05:53 bigbang /kernel: (ahc0:0:0): "SEAGATE ST34371W 0484"
> type 0 fixed SCSI 2
> Feb  4 10:05:53 bigbang /kernel: sd0(ahc0:0:0): Direct-Access 4148MB
> (8496884 512 byte sectors)
> Feb  4 10:05:53 bigbang /kernel: ahc0:A:6: refuses WIDE negotiation.
                                   ^^^^^^^^
> Using 8bit transfers
>
> How can I solve this?

What is at SCSI ID 6?  You're not confusing this message with the
messages for the Seagate are you?

You don't tell us what is at SCSI ID 6; it apparently doesn't support
wide transfers.  Go into Adaptec SCSI Select Utilities and disable
wide negotiation for this device.  Some older devices choke when
negotiating wide transfers, so if you're having problems getting
SCSI ID 6 recognized by the kernel, disable wide negotiation.

Dan Eischen
deischen@iworks.InterWorks.org