Re: snapscan and aic7xxx driver don't work together

From: Steve Underwood (steveu@coppice.org)
Date: Tue Jun 26 2001 - 07:01:56 PDT

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    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.
    >
    > --
    > Source code, list archive, and docs: http://www.mostang.com/sane/
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