[sane-devel] Scanning With Nikon Coolscan LS40 / IVED

[m. allan noah]

You might try sane-backends 1.0.27, which includes the following
statement in its release notes:

Note 3: The Linux USB3 workaround which was added in version 1.0.25 is
now disabled by default. If you have difficulty using a scanner which
previously worked, or intermittent scanner availability, try setting
the new environment variable SANE_USB_WORKAROUND=1 before starting
your frontend.

On Fri, Jul 28, 2017 at 10:02 PM, Leon Hauck <leon at progcpu.net> wrote:
> TLDR: are there any known issues using a Nikon Coolscan IV ED with
> libusb 0.1.12-30 and kernel 4.9.0?
>
> ---------------------------------------
>
> I'm trying to get an Coolscan IV ED (LS40) to work with Debian Stretch
> (current stable release).
>
> scanimage -L
>
> properly identifies the scanner, however
>
> scanimage > testme.pnm
>
> hangs and eventually errors out due to an i/o error.
>
> I connected this scanner to a laptop running the same software with the same
> results.
>
> I connected the scanner to an older laptop running Debian Jessie (previous
> stable release), and it works fine, and I can also pass along additional
> command line arguments for white balance, auto-focus, etc.
>
> I'm guessing something may have changed in libusb and/or the kernel, which
> is preventing communication with this older USB1.1 unit.
>
> Are there any known issues with this setup?
>
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