Comment # 20 on bug 905034 from Per Jessen

(In reply to Johannes Meixner from comment #19)
> A totally different idea:
> 
> Your office12-scanimage.open.strace shows:
> ---------------------------------------------------------------------------
> open("/home/per/.sane/hewlett-packard-scanjet-2400c.cal",...
> ---------------------------------------------------------------------------
> this together with what "man sane-genesys" tells about calibration
> in particular things like
> ---------------------------------------------------------------------------
>   If you plug the scanner in another machine or use it with another
>   account, calibration will have to be redone.
> ---------------------------------------------------------------------------
> and
> ---------------------------------------------------------------------------
>   --threshold percent
>   0..100%  (in  steps of 1). Select minimum brightness to get a
>   white point. Pixels whith brightness below that value will be
>   scanned as black.
> ---------------------------------------------------------------------------
> and how your office12-scanimage-scan10.pnm looks like:
> 
> Perhaps your current calibration is wrong?
> 
> Could you move /home/per/.sane/hewlett-packard-scanjet-2400c.cal away
> and test again and furthermore re-do the calibration and test again?

Okay, I did the following>

power off/on scanner (to reset)
rm ~/.sane/hewlett-packard-scanjet-2400c.cal
scanimage --mode color --resolution 300 >scan001.pnm
>> weird colours.
scanimage --mode color --resolution 150 >scan002.pnm
>> weird colours.
scanimage --mode color --resolution 300 >scan003.pnm
>> weird colours.

I have never calibrated this scanner before, it was bought in June 2007, even
if it came with a calibration sheet, it is long gone. Also, when I use it from
office11 (openSUSE 13.1), it works fine.