[sane-devel] "scanimage: sane_start: Invalid argument" with a Canon LiDE 220 scanner

[YuGiOhJCJ]

Hello,

I confirm that the workaround on your link is working.
If I set "SANE_DEBUG_SANEI_USB" to "5" then I am able to scan.
I confirm that it works.

However, I don't understand how a debug variable can fix the problem.

Is there a better way to fix that please?

Thank you.
Best regards.

On 03/03/2021 16:43, Ralph Little wrote:
> Hi,
> 
> On 2021-03-03 4:26 a.m., YuGiOhJCJ via sane-devel wrote:
>> Hello,
>>
>> I own a Canon LiDE 220 scanner.
>> This scanner is working perfectly fine on Windows 8.1 (64-bit) so I
>> suppose that it is not broken.
>>
>> Here is what happens when I try to use it with SANE on Slackware 14.2
>> (64-bit):
>> ---
>> $ scanimage --version
>> scanimage (sane-backends) 1.0.32; backend version 1.0.32
>> $ scanimage -L
>> device `genesys:libusb:001:004' is a Canon LiDE 220 flatbed scanner
>> $ scanimage >image.pnm
>> Output format is not set, using pnm as a default.
>> scanimage: sane_start: Invalid argument
>> ---
> Sounds like this is more than an isolated incident:
> 
> https://gitlab.com/sane-project/backends/-/issues/439
> 
> Cheers,
> Ralph
> 
>