On Thu, 6 Feb 2003 09:53:46 +0100
Henning Meier-Geinitz <henning at meier-geinitz.de> wrote:
> Hi,
>
> On Wed, Feb 05, 2003 at 03:29:06PM -0800, TomF wrote:
> > I installed xsane-0.84-8.i386.rpm, xsane-gimp-0.84-8.i3
> > 86.rpm, sane-backends-1.0.8-5 from the Redhat 8.0 CDs, and found
> > SCSI scanner "hp scanjet 7400c 0.8S" at device /dev/scanner for my
> > HP ScanJet 7450C, which is connected by USB.
A scanimage --test appears to have executed correctly.
When I execute scanimage -d avision:/dev/scanner --format tiff >
image2.tiff, it hangs at the end of scanning a page. Eventually it
finishes, but the scanning light does not return to its home position,
and stays on for hours. While it is in this state, executing the
scanimage command again produces an invalid parameter message. I have
to power off to reset the scanner. When I bring the system back up, I
can repeat the entire scenario.
The image2.tiff file is 30 MB. When I open it with an image view a
completely black image is displayed. The scanner works in Windows XP
without problems.
>
> Have a look at the other threads on avision + USB scanner that
> appeared on sane-devel during the last days. While the symptoms are
> diffe rent, maybe it's the same problem? As requested by the backend
> author, can you send a copy of your mail to him ("Rene Rebe"
> <rene.rebe at gmx.net>)?
>
> Bye,
> Henning
In the sane-devel threads I found a reference to a FAQ, where I found:
"Now when your scanner is recognized, do a
cat /proc/bus/usb/drivers
This should give you something like
usbdevfs
hub
hid
48- 63: usbscanner"
After verifying that the HP ScanJet 7400c was recognized, I issued the
command. Instead, I got:
usbdevfs
hub
96-111: hiddev
hid
hpusbscsi
0- 15: usblp
"You might need to use /dev/usb/scanner0 instead of /dev/usbscanner."
/dev/usb/scanner0 exists, but
[root at localhost Tom]# ls -l /dev/scanner
lrwxrwxrwx 1 root root 8 Nov 4 20:57 /dev/scanner ->
/dev/sgf[root at localhost Tom]# ls -l /dev/sgf
lrwxrwxrwx 1 root root 3 Nov 4 12:23 /dev/sgf -> sg5
[root at localhost Tom]# ls -l /dev/sg5
crw------- 1 Tom root 21, 5 Aug 30 16:31 /dev/sg5
seems to indicate that the scanner configuration does not point to it.
Is there something else I need to do to connect the scanner to
/dev/usb/scanner0? Am I going in the right direction?