[sane-devel] Epson Perfection 1650 vs RedHat 7.2: not seen?

[Pierre Sarrazin]

I have just connected my new Epson Perfection 1650 scanner to my
RedHat 7.2 system (linux 2.4.7), but it does not seem like the
scanner is detected.

I have added these lines to /etc/modules.conf:

    alias usb-controller usb-uhci

The "usbcore" and "usb-uhci" modules are loaded according to lsmod.
When I give the command "cat /proc/bus/usb/devices" (under root),
I only get this:

T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 2
B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 1.00 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 0.00
S:  Product=USB UHCI Root Hub
S:  SerialNumber=d000
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=255ms


I picked up somewhere that the vendor ID for Epson is 0x04b8 and
that the product ID for the 1650 is 0x0110.  So I tried the command
"modprobe scanner vendor=0x04b8 product=0x0110", and the line

    kernel: scanner.c: USB Scanner support registered.

appears in /var/log/messages, but /proc/bus/usb/devices still only
displays the above paragraph.  My understanding is that I should
be seeing another paragraph with the line "Product=EPSON Scanner".

Trying "modprobe scanner" without parameters gives the same result.

I am using the stock RedHat kernel and modules.  I have not
recompiled any of parts of those.

I have two USB connectors at the back of my machine.  I tried
both, without success (I removed the scanner module with rmmod,
then connected the scanner to the other USB port, then gave the
modprobe command again).  When I disconnected the scanner from a
USB port, the scanner made a high pitched "dzoot! dzoot!" sound,
which sounds normal, I guess...

The command "scanimage" from scan-backends 1.0.5 says "no SANE
devices found".  The only uncommented line in /etc/sane.d/epson.conf
is "usb /dev/usb/scanner0".  Moreover:

# ls -l /dev/usb/scanner0 /dev/*scanner*
/bin/ls: /dev/*scanner*: No such file or directory
crw-------    1 ps       root     180,  48 Aug 30 16:30 /dev/usb/scanner0

I tried "scanimage -d epson:/dev/usb/scanner0" (under root) and
got this:

scanimage: open of device epson:/dev/usb/scanner0 failed: Invalid argument

Smarter users have succeeded with the 1650, so I suppose I'm not
very far from the goal.  Thanks for any help...

-- 
Pierre Sarrazin <sarrazip at sympatico dot ca>