On 20/02/2013 09:15, paavo at benthicscience.com wrote:
> Thank you all.  I was about to write in regarding the same issue raised last 
> night.  The Canon LIDE700F works on one system, but fails on three other 
> units running the same, recent release of sane in Ubuntu 12.04 environments.  
> On the 32bit systems for which it fails (desktop, laptops, using powered hubs 
> and direct to controller connections) it looks like the scanner is connecting 
> and disconnecting between the start of the call and the next, resulting in 
> invalid arguments.  The device  lib:usb:001:xxx where xxx increments by +1 
> whenever sudo scanimage >image.pnm  is run.  Sane-find-scanner and scanimage 
> -L report the proper vendor and product codes.  On one failed system the 
> libsane-genesys.so.1.0.23 file is not in /usr/lib/sane, but   
> libsane-hpaio.so.1 is there.  I tried cloning the git repository, but remote 
> directory seems to hang.
>
> Cheers, Brian
>
     Hello,

     scanimage --version will tell the exact SANE and backend version. 
1.0.23 is required for full 700F support.
     In case you have still a problem and have SANE 1.0.23 installed, 
providing me with the debug log obtained by running in a command shell:
export SANE_DEBUG_GENESYS=255
export SANE_DEBUG_GENESYS_LOW=255
export SANE_DEBUG_GENESYS_GL646=255
export SANE_DEBUG_GENESYS_GL841=255
export SANE_DEBUG_GENESYS_GL843=255
export SANE_DEBUG_GENESYS_GL847=255
export SANE_DEBUG_GENESYS_GL124=255
export SANE_DEBUG_SANEI_USB=255
scanimage -d genesys --resolution 75 --preview --mode Color 2>debug.log 
 >debug.pnm

Regards,
     Stef

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