[sane-devel] HP SCANJET 4500c trouble

[gcasados at solar.cinvestav.mx]

I have an HP SCANJET 4500c scanner. It works well under Windows but I want
get rid off such operating system. I found my scanner is supported by SANE
development source using HP5590 backend. When I issue the command
sane-find-scanner it returns:

This is sane-find-scanner from sane-backends 1.0.21cvs

  # 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.

trying libusb:

<device descriptor of 0x03f0/0x1205 at 001:014 (Hewlett-Packard hp scanjet
scanner)>
bLength               18
bDescriptorType       1
bcdUSB                2.00
bDeviceClass          255
bDeviceSubClass       255
bDeviceProtocol       255
bMaxPacketSize0       64
idVendor              0x03F0
idProduct             0x1205
bcdDevice             2.00
iManufacturer         1 (Hewlett-Packard)
iProduct              2 (hp scanjet scanner)
iSerialNumber         12 (CN25SS10YB)
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         39
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         192 (Self-powered)
 MaxPower             10 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      3
   bInterfaceClass    16
   bInterfaceSubClass 1
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      2 (bulk)
    wMaxPacketSize    512
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 1>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x02 (out 0x02)
    bmAttributes      2 (bulk)
    wMaxPacketSize    512
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 2>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x83 (in 0x03)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    1
    bInterval         8 ms
    bRefresh          0
    bSynchAddress     0

<trying to find out which USB chip is used>
    checking for GT-6801 ...
    this is not a GT-6801 (bcdUSB = 0x200)
    checking for GT-6816 ...
    this is not a GT-6816 (bDeviceClass = 255, bInterfaceClass = 16)
    checking for GT-8911 ...
    this is not a GT-8911 (check 1, bDeviceClass = 255, bInterfaceClass = 16)
    checking for MA-1017 ...
    this is not a MA-1017 (bDeviceClass = 255, bInterfaceClass = 16)
    checking for MA-1015 ...
    this is not a MA-1015 (bcdUSB = 0x200)
    checking for MA-1509 ...
    this is not a MA-1509 (bcdUSB = 0x200)
    checking for LM983[1,2,3] ...
    this is not a LM983x (bDeviceClass = 255, bInterfaceClass = 16)
    checking for GL646 ...
    this is not a GL646 (bDeviceClass = 255, bInterfaceClass = 16)
    checking for GL646_HP ...
    this is not a GL646_HP (bDeviceClass = 255, bInterfaceClass = 16)
    checking for GL660+GL646 ...
    this is not a GL660+GL646 (bDeviceClass = 255, bInterfaceClass = 16)
    checking for GL84x ...
    this is not a GL84x (bDeviceClass = 255, bInterfaceClass = 16)
    checking for ICM532B ...
    this is not a ICM532B (check 1, bDeviceClass = 255, bInterfaceClass = 16)
    checking for PV8630/LM9830 ...
    this is not a PV8630/LM9830 (bDeviceClass = 255)
    checking for M011 ...
    this is not a M011 (bcdUSB = 0x200)
    checking for RTS8822 ...
    this is not a RTS8822 (bDeviceClass = 255)
    checking for rts8858c ...
    this is not a rts8858c (bDeviceClass = 255)
    checking for SQ113 ...
    this is not a SQ113 (bDeviceClass = 255)
    checking for HP4500C/4570C/5500C/5550C/5590/7650 chipset ...
    Didn't get correct confirmation for USB-in-USB command (needed: 0x01,
got: 0x00
    checking for rts8801/rts8891 ...
    this is not a rts8801/rts8891 (bDeviceClass = 255)
<Couldn't determine the type of the USB chip (result from sane-backends
1.0.21cvs)>

found USB scanner (vendor=0x03f0 [Hewlett-Packard], product=0x1205 [hp
scanjet scanner]) at libusb:001:014

  # 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.
done

What could be the problem with

    checking for HP4500C/4570C/5500C/5550C/5590/7650 chipset ...
    Didn't get correct confirmation for USB-in-USB command (needed: 0x01,
got: 0x00 ?

After issue the command the scanner hangs and I need to unplug and plug
again.

Thanks a lot in advance.

Gaspar