Le lundi 29 janvier 2007, Robert Price a ?crit?:
> Thanks. Using this package, the scanner tries to back up past the physical
> end, then moves forward a bit, then tries backing up again repeatedly till
> killed. While this is happening, the debug output repeats:
>
> [lexmark] x1100_usb_bulk_read: returned size = 3 (required 3)
> [lexmark] x1100_usb_bulk_read: returned size = 3 (required 3)
> [lexmark] x1100_usb_bulk_read: returned size = 2500 (required 2500)
> [lexmark] x1100_usb_bulk_read: returned size = 3 (required 3)
> [lexmark] x1100_usb_bulk_read: returned size = 3 (required 3)
> [lexmark] x1100_usb_bulk_read: returned size = 2500 (required 2500)
>
> This does appear to be progress, however, as before it would just keep
> straining to back up past the physical end and now it seems to recognize it
> is at the end after a second or less and moves forward then tries again.
> Again, your efforts are deeply appreciated and hope the above suggests a
> solution.
>
> Bob
>
Hello,
could you use scanimage to try to do a scan and send debug output to a
log
file ? The attached file will create a scan.log in
lexmark_testing/sane-backend-1.0.18 will do such. It has to be saved and run
in the lexmark_testing directory. There will be also a number of *.pnm file
in the lexmark_testing/sane-backend-1.0.18 directory. Please send the log and
image files to me (they will be to big for the list), so I can try to see how
to make things further.
Regards,
Stef
-------------- next part --------------
A non-text attachment was scrubbed...
Name: scan.sh
Type: application/x-shellscript
Size: 154 bytes
Desc: not available
Url :
http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20070130/08b753cd/scan.bin
From r...@exactcode.de Tue Jan 30 11:07:40 2007
From: r...@exactcode.de (Rene Rebe)
Date: Tue Jan 30 11:38:49 2007
Subject: [sane-devel] JPEG compression slipped in?
In-Reply-To: <1170117376.29296.5.ca...@kirk.lan>
References: <1170117376.29296.5.ca...@kirk.lan>
Message-ID: <200701301107.40853.r...@exactcode.de>
On Tuesday 30 January 2007 01:36:16 PF wrote:
> Hi...
>
> If I scan a page of text at 200dpi in color mode (for example) with
> xsane, then zoom in to 400%, I can see jpeg-like artifacts around
> letters and other sharp lines. This isn't an artifact of the xsane
> zooming process, as saving the file as a TIFF and examining the
> individual pixels with another program will also show the artifacts.
>
> Is there an option to turn this off?
Maybe your device sends JPEG data and the backend is transparently
decompressing it ?
Which scanner are you using?
--
Ren? Rebe - ExactCODE GmbH - Europe, Germany, Berlin
http://exactcode.de | http://t2-project.org | http://rene.rebe.name
+49 (0)30 / 255 897 45
