[sane-devel] Fujitsu fi-6130: x-offset duplex

[Bob Gustafson]

I'm tempted to top post, but see way below..

On 3/21/20 8:48 AM, Max Voit wrote:
> On Sun, 8 Mar 2020 21:42:40 -0400
> "m. allan noah" <kitno455 at gmail.com> wrote:
>
>> Hmm, the X offset setting is controlled by the scanner itself. It is
>> stored somewhere in the scanner firmware, but I'm not sure how we
>> write to it. I can ask my contacts at Fujitsu for information.
> Thank you for your help, Allan.
>
> After hooking up a Windows machine, I realized that the Windows driver
> also provides a "settings" page. There it's possible to set the offsets.
> It says it's writing to eeprom, so the setting is persistently stored
> in the device. Thus, after configuring the offsets from Windows, scan
> results have correct offsets with sane as well.
>
> Unfortunately I was unable to aquire usb logs of the eeprom writing
> procedure. I installed wireshark and pcap-usb, but it doesn't show a usb
> capturing device. Hints on that would be appreciated.
>
> On the other hand I'm not sure whether writing to the eeprom is not out
> of scope of sane?
>
> Best regards,
> Max
>
See for example https://wiki.wireshark.org/CaptureSetup/USB

which describes configuring Wireshark to analyze USB packet data.

I used it a few years ago and as I remember it was useful.

Have fun

Bob G