[sane-devel] Canon LiDE 120 Black Image

[martin.gallezot at free.fr]

Hello,

I tested the latest build (SANE Genesys backend version 1.0 build 2507 from sane-backends 1.0.25 git) on my LIDE 120. Scanner is recognized, stepper motor are moving but the scan image is 'all black'.

I have set the debug level of Genesys to 255

Any idea what I am doing wrong ?

Thanks,

Martin


----- Mail original -----
De: "Stef" <stef.dev at free.fr>
À: "martin gallezot" <martin.gallezot at free.fr>, sane-devel at lists.alioth.debian.org
Envoyé: Mercredi 17 Juin 2015 20:44:23
Objet: Re: [sane-devel] LiDE 120, small changes pushed in git

On 16/06/2015 11:41, martin.gallezot at free.fr wrote:
> Hello,
>
> I have tested the latest build available from git. Unfortunately I wasn't able to check the version number. which debug logs are you referring to ?
>
> Anyway with the latest build, my LiDe 120 is not supported at all (even with resolution under 600 dpi).
>
> It may well be that I made a mistake at compile or forgot to update a configuration file. Anyone else had a chance to try it ?
>
> Thanks,
>
> Martin
>
> ----- Mail original -----
> De: "Stef" <stef.dev at free.fr>
> À: "Sane Development" <sane-devel at lists.alioth.debian.org>
> Envoyé: Jeudi 11 Juin 2015 21:55:07
> Objet: [sane-devel] LiDE 120, small changes pushed in git
>
>       Hello,
>
>       I have pushed some small changes that should improve support for
> the LiDE 120 for resolutions up to 600 dpi. Please test this build 2507
> of the geneys backend (check this version number in debug logs when
> testing).
>       Working with some logs sent, then throwing back some code to
> someone else to test isn't practical. I don't feel like going on that
> way. So people interested by adding support for this model (or another
> one) should clone SANE's git tree and syseneg project (which provides a
> tool to analyze pcap usb logs), and start hacking it.
>       I'd be happy to improve genesys backend's doc to help, and will
> gladly apply patches.
>
> Regards,
>       Stef
>
     Hello,

     the backend generates traces when these environment variables are set:
export SANE_DEBUG_GENESYS=255
export SANE_DEBUG_GENESYS_LOW=255
export SANE_DEBUG_GENESYS_GL124=255

     then run your frontend from the same command prompt where you typed 
these commands, for instance you can run scanimage like this:
scanimage -d genesys --resolution 75 --preview --mode Color 2>rl.log >rl.pnm

rl.pnm will be the scan, while rl.log will contain all debug traces.

Regards,
     Stef