[sane-devel] trying to get a Benq4300U USB scanner working .....

Michael Fothergill mikef20000 at hotmail.com
Sat Dec 2 19:16:51 CET 2006


Dear sane people,


I have tried to get my scanner to work a number of times under
Fedora Core 6 on my machine (1200 MHz Athlon) but have not
succeeded.

I am now trying with Debian on the same machine on a second drive.

It is pretty recalcitrant and it may still not work but I will post
some of my efforts here and if you would make suggestions I would be
grateful.

What is REALLY sad is that if I can't succeed I will have to wipe
Fedora off and reinstall Windows 98 just so I can scan images.

Yikes....

The other alternative is to go to the library and use the scanner
there.  I would still be using Windows but at least not on my own
machine.

OK.  Here goes.

As you can see I have edited the snapscan.conf file that lives in
/etc/sane.d and bunged in the driver for the scanner I use and the
device directory /dev/usb/scanner0.

more snapscan.conf
#------------------------------ General
#-----------------------------------

# Change to the fully qualified filename of your firmware file, if
# firmware upload is needed by the scanner
firmware /home/mikef/benq4300/u222v067.bin

# If not automatically found you may manuaully specify a device
name.

# For USB scanners also specify bus=usb, e.g.
# /dev/usb/scanner0 bus=usb

# For SCSI scanners specify the generic device, e.g. /dev/sg0 on
Linux.
# /dev/sg0

#---------------------------------------------------------------------------
# No changes should be necessary below this line
#---------------------------------------------------------------------------

#-------------------------- SCSI scanners
----------------------------------
# These SCSI devices will be probed automatically
scsi AGFA * Scanner
scsi COLOR * Scanner
scsi Color * Scanner
scsi ACERPERI * Scanner

#--------------------------- USB scanners
-----------------------------------
# These USB devices will be probed automatically
# (This will currently work only on Linux)

# Benq/Acer/Vuego 310U
usb 0x04a5 0x1a20
usb 0x04a5 0x1a26

# Benq/Acer/Vuego 320U
usb 0x04a5 0x2022

# Benq/Acer/Vuego 620U / 620UT
usb 0x04a5 0x1a2a
usb 0x04a5 0x2040

# Benq/Acer/Vuego 640U
usb 0x04a5 0x2060

# Benq/Acer/Vuego 640BU
usb 0x04a5 0x207e

# Benq/Acer/Vuego 640BT
usb 0x04a5 0x20be

# Benq/Acer/Vuego 1240U
usb 0x04a5 0x20c0

# Benq/Acer/Vuego 3300 / 4300
usb 0x04a5 0x20b0

# Benq/Acer/Vuego 4300
usb 0x04a5 0x20de

# Benq/Acer/Vuego 5000
usb 0x04a5 0x20fc

# Benq/Acer/Vuego 5300
usb 0x04a5 0x20fe

# Agfa 1236U
usb 0x06bd 0x0002

# Agfa 1212U
usb 0x06bd 0x0001
usb 0x06bd 0x2061

# Agfa Snapscan e10
usb 0x06bd 0x2093

# Agfa Snapscan e20
usb 0x06bd 0x2091

# Agfa Snapscan e25
usb 0x06bd 0x2095

# Agfa Snapscan e26
usb 0x06bd 0x2097

# Agfa Snapscan e40
usb 0x06bd 0x208d

# Agfa Snapscan e42
usb 0x06bd 0x20ff

# Agfa Snapscan e50
usb 0x06bd 0x208f

# Agfa Snapscan e52
usb 0x06bd 0x20fd

# Epson Perfection 660
usb 0x04b8 0x0114

# Epson Perfection 1670
usb 0x04b8 0x011f

# Epson Perfection 2480
usb 0x04b8 0x0121
mikef at spc2-burn3-0-0-cust329:/etc/sane.d$

>OK, now let's try to detect it.  I have changed my user group to include 
>the scanner group.
>
>Apparently you are supposed to do this.
>
>But I am logged in as root at the terminal I am showing now to help ease 
>things.
>
>
>
spc2-burn3-0-0-cust329:/proc/bus/usb/002# sane-find-scanner

  # sane-find-scanner will now attempt to detect your scanner. If
the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

  # No SCSI scanners found. If you expected something different,
make sure that
  # you have loaded a SCSI driver for your SCSI adapter.
  # Also you need support for SCSI Generic (sg) in your operating
system.
  # If using Linux, try "modprobe sg".

found USB scanner (vendor=0x04a5, product=0x20b0) at libusb:002:002
  # Your USB scanner was (probably) detected. It may or may not be
supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other
proprietary ports
  # can't be detected by this program.


>It looks like it has found it.  But don't get too excited.
>
>Let's try something else;
>
scanimage -L

No scanners were identified. If you were expecting something
different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the
documentation
which came with this software (README, FAQ, manpages).

>Hmmm..  It can't find it now. I think if it is a USB device I once read 
>somewhere that scanimage -L might not work so easily c.f. SCSI in this 
>situation.
>
>Comments please.

OK, let's rock the joint and run cat /proc/bus/usb/devices:

spc2-burn3-0-0-cust329:/proc/bus/usb/002# cat /proc/bus/usb/devices

>
>T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 3
>B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
>D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
>P:  Vendor=0000 ProdID=0000 Rev= 0.00
>S:  Product=USB OHCI Root Hub
>S:  SerialNumber=cf902000
>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=   2 Ivl=255ms
>T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=12  MxCh= 0
>D:  Ver= 1.00 Cls=ff(vend.) Sub=ff Prot=ff MxPS= 8 #Cfgs=  1
>
>Don't get too excited nbut I think this line here is the scanner stuff but 
>it doesn't say scanner found so maybe there is still a problem here 
>comments please....
>
>P:  Vendor=04a5 ProdID=20b0 Rev= 1.20
>
>C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=100mA
>I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
>E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
>E:  Ad=02(O) Atr=02(Bulk) MxPS=   8 Ivl=0ms
>E:  Ad=83(I) Atr=03(Int.) MxPS=   8 Ivl=16ms
>T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 3
>B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
>D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
>P:  Vendor=0000 ProdID=0000 Rev= 0.00
>S:  Product=USB OHCI Root Hub
>S:  SerialNumber=cf879000
>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=   2 Ivl=255ms
>T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  3 Spd=12  MxCh= 0
>D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
>P:  Vendor=04b8 ProdID=0005 Rev= 1.00
>S:  Manufacturer=EPSON
>S:  Product=USB Printer
>S:  SerialNumber=HU22T0511260429380
>C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=  2mA
>I:  If#= 0 Alt= 0 #EPs= 2 Cls=07(print) Sub=01 Prot=02 Driver=usblp
>E:  Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
>E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
>spc2-burn3-0-0-cust329:/proc/bus/usb/002#
>
>OK, now what about all that libusb stuff?
>
>Here goes:
>spc2-burn3-0-0-cust329:/proc/bus/usb/002# ls -l
>total 1
>-rw-rw-rw-  1 root root    18 2006-12-02 03:23 001
>-rw-rw----  1 root scanner 18 2006-12-02 02:46 002
>spc2-burn3-0-0-cust329:/proc/bus/usb/002# pwd
>/proc/bus/usb/002
>spc2-burn3-0-0-cust329:/proc/bus/usb/002# cd ../001
>spc2-burn3-0-0-cust329:/proc/bus/usb/001# ls -l
>total 1
>-rw-r--r--  1 root root 18 2006-12-02 03:23 001
>-rw-rw-rw-  1 root root 18 2006-12-02 03:23 003
>spc2-burn3-0-0-cust329:/proc/bus/usb/001# cd 003
>bash: cd: 003: Not a directory
>spc2-burn3-0-0-cust329:/proc/bus/usb/001# ls -l
>total 1
>-rw-r--r--  1 root root 18 2006-12-02 03:23 001
>-rw-rw-rw-  1 root root 18 2006-12-02 03:23 003
>spc2-burn3-0-0-cust329:/proc/bus/usb/001# cd 001
>bash: cd: 001: Not a directory
>spc2-burn3-0-0-cust329:/proc/bus/usb/001# cd ..
>spc2-burn3-0-0-cust329:/proc/bus/usb# ls
>001  002  devices  drivers
>spc2-burn3-0-0-cust329:/proc/bus/usb# cd 002
>spc2-burn3-0-0-cust329:/proc/bus/usb/002# ls -l
>total 1
>-rw-rw-rw-  1 root root    18 2006-12-02 03:23 001
>-rw-rw----  1 root scanner 18 2006-12-02 02:46 002
>spc2-burn3-0-0-cust329:/proc/bus/usb/002# cd 002
>bash: cd: 002: Not a directory
>spc2-burn3-0-0-cust329:/proc/bus/usb/002# ls -l
>total 1
>-rw-rw-rw-  1 root root    18 2006-12-02 03:23 001
>-rw-rw----  1 root scanner 18 2006-12-02 02:46 002
>spc2-burn3-0-0-cust329:/proc/bus/usb/002# cd ..
>spc2-burn3-0-0-cust329:/proc/bus/usb# ls
>001  002  devices  drivers
>spc2-burn3-0-0-cust329:/proc/bus/usb# cd 001
>spc2-burn3-0-0-cust329:/proc/bus/usb/001# ls -l
>total 1
>-rw-r--r--  1 root root 18 2006-12-02 03:23 001
>-rw-rw-rw-  1 root root 18 2006-12-02 03:23 003
>spc2-burn3-0-0-cust329:/proc/bus/usb/001# pwd
>/proc/bus/usb/001
>
>
>I seem to go round in circles with those directories because they all look 
>the same.  I am always paranoid I haven't speared every one of them.
>
>Is this good enough?
>
>What about changing the ownership and groups from root to user?
>
>I am root now so shouldn't this be OK?
>
>OK.  Now for the grand finale.
>
>
>Let's try to run xsane and fail miserably.
>
>Here goes:
>
>spc2-burn3-0-0-cust329:/proc/bus/usb/001# /usr/bin/xsane
>Xlib: connection to ":0.0" refused by server
>Xlib: No protocol specified
>
>
>(xsane:8980): Gtk-WARNING **: cannot open display:
>spc2-burn3-0-0-cust329:/proc/bus/usb/001#
>
>Terrible.  It won't even start?  Any suggestions?
>
>Let's try running xsane as a user now:
>
>It dies.
>
>The error message says no devices available.
>
>But I think I can play with the scanner detection commands to make the 
>xsane see the scanner as a user but then crash at the end I think with a 
>libusb problem.  Let's see if I can tweak it to do this.
>
>Here goes.
>
>I tried but I can't seem to get any further with it.  I just get the no 
>devices error again.
>
>Suggestions on getting further with it appreciated.
>
>
Michael Fothergill

P.S.  I tried Vuescan linux version and it worked immediately. But it is 
proprietary software.....

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