Re: Some snapscan feedback

From: Douglas Gilbert (dgilbert@interlog.com)
Date: Fri May 26 2000 - 20:53:26 PDT

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    Steffen Kluge wrote:
    >
    > Hi,
    > I've been playing a bit with my Acer Prisa 620ST and the new
    > snapscan backend. This is what I found:
    >
    > [snip]
    >
    > - I'm doing all this with sane-1.0.2, kernel-2.2.14, sg-3.0.15,
    > and the host adapter/scanner look like this:
    >
    > scsi0 : Tekram DC395U/UW/F DC315/U V1.10, 1999/07/19
    > scsi : 1 host.
    > Vendor: Color Model: FlatbedScanner_9 Rev: 0117
    > Type: Scanner ANSI SCSI revision: 02
    > Detected scsi generic sg0 at scsi0, channel 0, id 2, lun 0, type 6

    With that sg driver [only available from the sg website] you
    could get a "down under" view of what is going on with a
    script like this one:
      #!/bin/sh
      while true
      do
            sleep 1
            cat /proc/scsi/sg/debug
      done

    This may show whether those big delays are on the scanner or
    in the app. If the delays are in the app, the 'ps axl' and
    SANE's debug output may help. Can SANE's debug output be
    timestamped line by line?

    Doug Gilbert 

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