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

[Simon Matter]

Attached is the log with level 35.

> On Wed, Jan 14, 2026 at 9:33 AM Simon Matter <simon.matter at invoca.ch>
> wrote:
>
>> 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?
>>
>>
> Actually, this log is interesting- could you try again with the same
> state,
> but increase debugging to 35?
>
> Also, I wonder if the kernel is producing any usb related errors when this
> happens? Perhaps dmesg might show something?
>
> allan
> --
> "well, I stand up next to a mountain- and I chop it down with the edge of
> my hand"
>
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