[sane-devel] Unstable scanning with Fujitsu fi-7160

[Simon Matter]

Hi Allan

> I suspect the scanner may be going to sleep. Some older models had
> problems
> waking up. Questions:
>
> 1. what other model scanners have the problem?

For now I was only able to try fi-7160 and fi-7260.

> 2. how long do you wait between scans when this happens?

Only seconds.

> 3. if you press a button on the scanner before you scan, does the problem
> happen?

Yes happens also.

> 4. Have you tried another computer?

Yes, but same model so same USB configuration.

>
> if you want, you could gather some logs and send them to me.
>
> SANE_DEBUG_FUJITSU=15 scanimage [your parameters here] 2>7160.log

The log is from when the scanner is not seen anymore but still shown in
lsusb. I'm afraid that's not what you wanted?

Thanks,
Simon

>
> allan
>
> On Wed, Jan 14, 2026 at 6:44 AM Simon Matter via sane-devel <
> sane-devel at alioth-lists.debian.net> wrote:
>
>> > Hi,
>> >
>> > I try to use a Fujitsu fi-7160 scanner on AlmaLinux 10 (RHEL10
>> > compatible).
>>
>> Forgot to mention, SANE backends is version 1.2.1.
>>
>> >
>> > The scanner works some times but then fails and scanimage reports
>> > "scanimage: open of device fujitsu:fi-7260:1433 failed: Invalid
>> argument".
>> >
>> > The scanimage command is always the same and it can work 5 times and
>> fail
>> > on the next.
>> >
>> > The problem happens when connected via USB2 port or USB3. Different
>> other
>> > Fujitsu fi-xxxx scanners behave exactly the same.
>> >
>> > When the scanner fails it is also not detected via "scanimage -L".
>> > Powering off and on the scanner brings it back to life.
>> >
>> > Any help on this issue would be much appreciated.
>> >
>> > Thanks,
>> > Simon
>> >
>> >
>> >
>>
>>
>>
>>
>
> --
> "well, I stand up next to a mountain- and I chop it down with the edge of
> my hand"
>
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