Hi,
Am I missing something, or do you fail to say which version of Linux you
are running? With the aic7xxx driver in 2.2.14, 2.2.16, 2.2.18 and
2.2.19 (the ones I have used in the past few months) the snapscan
backend seems to work OK. There seem to be a lot of questions and
answers about the aic7xxx driver for 2.4.X on the kernel mailing list,
but I haven't followed what the issues are.
Regards,
Steve
Ben Stanley wrote:
>
> Hi,
>
> I recently changed SCSI card from an Adaptec aha152x based card to
>
> SCSI storage controller: Adaptec AHA-7850 (rev 1).
>
> using the aic7xxx driver. Unfortunately, my Acer Prisa 620s (snapscan
> backend) does not work with this scsi card, while it worked acceptably
> with the old one.
>
> Using aic7xxx driver and sane-backends-CVS-2001-06-17, I see in the log file
>
> when I load the aic7xxx driver:
> Jun 26 11:37:20 dragon kernel: PCI: Found IRQ 9 for device 00:0c.0
> Jun 26 11:37:20 dragon kernel: IRQ routing conflict in pirq table for
> device 00:0c.0
> Jun 26 11:37:20 dragon kernel: scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI
> HBA DRIVER, Rev 6.1.5
> Jun 26 11:37:20 dragon kernel: <Adaptec aic7850 SCSI adapter>
> Jun 26 11:37:20 dragon kernel: aic7850: Single Channel A, SCSI
> Id=7, 3/255 SCBs
> Jun 26 11:37:20 dragon kernel:
> Jun 26 11:37:20 dragon kernel: (scsi0:A:2:0): refuses synchronous
> negotiation. Using asynchronous transfers
> Jun 26 11:37:20 dragon kernel: Vendor: Color Model:
> FlatbedScanner_9 Rev: 0117
> Jun 26 11:37:20 dragon kernel: Type: Scanner
> ANSI SCSI revision: 02
>
> When I try to use XSane 0.78 to talk to the scanner, I get an IO error,
> and a message in the log about Jun 26 11:37:58 dragon kernel: Detected
> scsi generic sg0 at scsi0, channel 0, id 2, lun 0, type 6
> Jun 26 11:37:58 dragon kernel: (scsi0:A:2:0): refuses synchronous
> negotiation. Using asynchronous transfers
> Jun 26 11:37:58 dragon last message repeated 22 times
> Jun 26 11:37:59 dragon saned[1198]: access by
> saned-user@dragon.stanleys.uow.edu.au accepted
> Jun 26 11:37:59 dragon kernel: (scsi0:A:2:0): refuses synchronous
> negotiation. Using asynchronous transfers
> Jun 26 11:38:19 dragon last message repeated 8 times
>
> Now, this driver reports that my iomega zip drive also doesn't support
> synchronous negotiation, but it works with the other SCSI card. I
> suspect the fault may like with the SCSI card driver...
>
> However, I still wonder if sane supports asynchronous transfers?
>
> If you reckon this would be a kernel problem, do you have any
> recommendations as to where to report it?
>
> Thanks,
> Ben.
>
> --
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