CanoScan N670U/LiDE 20 jamming with FC5

I've seen some posts before about problems with this
scanner under FC5 (which
appear not always to occur with other distributions).
But the previous posts didn't seem to have a clear
solution.
Can somebody please help me out and/or direct me to where a
solution is
available?

Canon CanoScan N670U (I believe it is LiDE 20)

Fedora Core 5:	fresh install of /root (not upgrade from
previous FC).

Tried with default xsane, scanimage, and then upgraded
various packages
related to it.  Same problem throughout:

Jamming of scanner (intermittent, but more often than not)
Both color and gray
Only way out is to unplug USB cable, kill xsane, then plug
USB cable and
     restart xsane
Problem occurs sometimes on opening xsane, other times it
can be stopped
     by immediately starting a scan.  Also intermittently
occurs in the
     middle of scanning a series of pages -- but always at
the very
     beginning of a particular scan.  Mechanically:  the
pulley in the
     scanner under the window looks to be shaking back and
forth a little.
     Nasty noise...  but no smoke (yet).

Kernel has been upgraded:
# uname -a
  Linux essiama 2.6.17-1.2174_FC5 #1 Tue Aug 8 15:30:55 EDT
2006 i686 i686
i386 GNU/Linux
but problem with both kernels.

RPMs after upgrading:

# rpm -qa | grep sane
sane-frontends-1.0.14-1.2.1
sane-backends-1.0.17-5.fc5.9
libsane-hpaio-1.6.6a-1.1
xsane-0.991-1.fc5
xsane-gimp-0.991-1.fc5

I.e., xsane up to 0.991-1 and sane-backends up to 1.0.17. 
(No rpm for
FC5 for sane-backends 1.0.18 seems to exist yet in the usual
repositories.)

Upon hotplugging the USB scanner:

Sep 11 10:22:59 localhost kernel: usb 2-1: new full speed
USB device using
uhci_hcd and address 8
Sep 11 10:22:59 localhost kernel: usb 2-1: configuration #1
chosen from 1
choice

Upon starting up xsane and getting an immediate jam:

Sep 11 10:23:22 localhost python: hpssd [WARN] Inrecognized
URI:
usb:/dev/usb/lp0
Sep 11 10:23:22 localhost hpiod: ParDevice::nibble_read
failed: Input/output
error

Note the odd lp0 line that comes up -- I do have a printer
running at
/dev/usb/lp0 (and fully working).

Note that lampswitch (on and off) seems to work just fine,
turning the color
scanning lights on and off (when not jammed).

The scanner works just fine -- I was fully successful with
using it under
FC2 with minimal updating of xsane (0.91 or so, if I
remember correctly).
I could verify this with MS Windows, but it sounds like
other people have
had the same jamming problem with CanoScan under FC5 and
reported that their
scanners are fine under MS Windows.  (Yes, I have verified
that the travel
lock is not engaged on the scanner.)

Notice that the sane-backends that show up in the
documentation page:

file:///usr/share/sane/xsane/doc/sane-backends-doc.html

does not have a link for sane-canon (unclear if that means
that the scanning
mode is working or just
not documented).

Roughly the same problem with KDE kooka:

# kooka --version
Qt: 3.3.5
KDE: 3.5.1-2.3 Red Hat
Kooka: 0.44

which presumably shares the same backend.  Note that on
kooka startup, it
has a splash screen
(to select scanner) which seems to have fully recognized my
scanner as
CanoScan N670U LiDE 20:

    Select Scan Device:
    1. plustek:libusb:002:012
       Canon N670U/N676U/LiDE20

Notice that the /var/log/messages error:

Sep 11 10:23:22 localhost hpiod: ParDevice::nibble_read
failed: Input/output
error

shows up regardless of kooka or xsane -- but also shows up
if starting up
kooka and the scanner
is not yet plugged into the USB!

Tried running xsane as root (despite the warnings) -- same
problem.

# rpm -qa | grep libusb
  libusb-0.1.11-2.2
Found comment to make sure libusb 0.1.12, so ran yum to
update, but no
packages found.
Not sure how important this is -- the scanner appears to be
recognized.

cat /etc/udev/rules.d/60-libsane.rules
...
SUBSYSTEM!="usb_device",
ACTION!="add",
GOTO="libsane_rules_end"
...
# Canon Inc.|CanoScan N670U/N676U/LIDE 20
SYSFS=="04a9",
SYSFS=="220d",
SYMLINK+="scanner-%k"
...
LABEL="libsane_rules_end"
...

-- 
View this message in context: http://www.nabble.com/CanoS
can-N670U-LiDE-20-jamming-with-FC5-tf2253141.html#a6249202
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CanoScan N670U/LiDE 20 jamming with FC5

Thread: CanoScan N670U/LiDE 20 jamming with FC5