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<div class="moz-signature">Greetings !<br>
Before about 2 months ago, my Canon LiDE25 worked perfectly well
in my Ubuntu Desktop 14.04.x environment . It had done so <br>
Then all at once I found myself battling with a scan malfunction.<br>
I tried using "Xsane Image scanning program", then "Simple Scan"
then "gscan2pdf" on an up-to-date installation of Desktop Ubuntu
14.04.x. HW is an old HP Intel 8510w with 3 USB ports. All ports
were tested, function well and behave the same.<br>
<br>
Description:<br>
<br>
1 - plug the flatbed scanner in any USB port<br>
-- nothing happens (no noise, no movement).<br>
<br>
2 - from terminal:<br>
    <font face="Courier New">> scanimage -L</font><br>
    <font face="Courier New">device `plustek:libusb:005:004' is
a Canon CanoScan LiDE25 flatbed scanner</font><br>
-- correct detection<br>
<br>
3 - in the Plustek-SANE back-end configuration file,
/etc/sane.d/plustek.conf, I inserted:<br>
<font face="Courier New">Â Â # for Canon CanoScan LiDE 25<br>
  [usb] 0x04A9 0x2220<br>
  device /dev/usbscanner<br>
</font>although later positionned in the same file, and in the
same [usb] section, I discovered<font face="Courier New"><br>
  device auto</font><br>
    <br>
4 - from terminal:<br>
    <font face="Courier New">> scanimage -x 100 -y 200
>output-trial.tiff</font>Â Â Â <br>
or simply <br>
    <font face="Courier New">> scanimage >output.tiff </font><br>
-- both produce a correct although low res color image _every_
single time.<br>
<br>
5 - when using either "Xsane Image scanning", "Simple Scan" or
"gscan2pdf", the response ot Canon LiDE 25 becomes comletely
erratic.<br>
Either it does not respond at all or responds once every 20 trials
with a correct scan and then not at all. Almost a complete no go
! Very surprising given that up until about two months ago,
everything worked smoothly. <br>
When clicking repeatedly on the scan button of any of the above
mentionned Sane grafical front-ends, a message can appear saying
that no scanner is detected. It does not always appear. More often
there is simply either no response or null data acquisition
without an actual physical scan, i.e. the raster-arm does not
move. Null-data acquisitiopn translates as a uniform black or
grey or white preview (when preview is available). <br>
Sometimes after the only possible first scan , the scanning
raster-arm does not come back to its home position. The scanner is
therefore not available anymore. Making it come back, involves
quitting the frontend, unplugging the scanner, plugging it in
again. and relaunching. This never happens from terminal.<br>
<br>
I have read past posts posted on the subject during the past 10
weeks, in particular those of <a
href="mailto:sane-devel%40lists.alioth.debian.org?Subject=Re%3A%20%5Bsane-devel%5D%20SANE%20not%20working%20with%20Canon%20Canoscan%20LiDE%20N676U&In-Reply-To=%3C54FDF4CD.3040404%40yahoo.com%3E"
title="[sane-devel] SANE not working with Canon Canoscan LiDE
N676U">lszkclek at yahoo.com </a><i><br>
</i><i><a class="moz-txt-link-freetext" href="http://lists.alioth.debian.org/pipermail/sane-devel/2015-March/033215.html">http://lists.alioth.debian.org/pipermail/sane-devel/2015-March/033215.html</a><br>
</i>and that <a
href="mailto:sane-devel%40lists.alioth.debian.org?Subject=Re%3A%20%5Bsane-devel%5D%20SANE%20not%20working%20with%20Canon%20Canoscan%20LiDE%20N676U&In-Reply-To=%3Calpine.LNX.2.00.1503100934010.1290%40nelson.suse.de%3E"
title="[sane-devel] SANE not working with Canon Canoscan LiDE
N676U">jsmeix at suse.de</a><br>
<a class="moz-txt-link-freetext" href="http://lists.alioth.debian.org/pipermail/sane-devel/2015-March/033220.html">http://lists.alioth.debian.org/pipermail/sane-devel/2015-March/033220.html</a><br>
but somehow I doubt that this is a USB port problem as everything
works well from terminal , plus I don't deal with a Suse type
distro. Ubuntu relies on "deb" packages not "rpm". <br>
<br>
<br>
I am stumped. <br>
Is this rather a front-end problem ? It sure looks like it.<br>
<br>
-cedric<br>
<br>
<i></i></div>
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