Hi,
I'm trying to get my HP 4300C working.
For that I'm using sane + the niash external backend.
niash is compiled to work with libusb.
here are some informations:
debian sid + 2.6.5-mm6 kernel
libsane is 1.0.13
libusb is 0.1.8
(atm all commands are run as root)
After a fresh boot lsusb does not see the scanner.
But it's present in /proc/bus/usb/device:
T: Bus=02 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#= 5 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=03f0 ProdID=0305 Rev= 0.00
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 48mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=10(unk. ) Sub=01 Prot=00 Driver=(none)
E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=83(I) Atr=03(Int.) MxPS= 1 Ivl=8ms
After running 'scanimage -h', lsusb sees the scanner:
Bus 002 Device 005: ID 03f0:0305 Hewlett-Packard ScanJet 4300c
the result of scanimage is:
scanimage: open of device niash:libusb:002:005 failed: Device busy
List of available devices:
niash:libusb:002:005
when i strace it, it shows:
ioctl(6, USBDEVFS_SETCONFIGURATION, 0xbfffead4) = -1 EPROTO (Protocol
error)
and it doesn't produce a kernel error.
running testtool (correctly compiled for libusb):
# ./testtool
No NIASH chipset found!
_ProbeRegisters failed!
stracing it shows a lot of:
21141 ioctl(4, USBDEVFS_CONTROL, 0xbffffa70) = -1 EPROTO (Protocol
error)
it does produce kernel errors:
usbfs: USBDEVFS_CONTROL failed cmd testtool dev 5 rqt 64 rq 12 len 1
ret -71
usbfs: USBDEVFS_CONTROL failed cmd testtool dev 5 rqt 192 rq 12 len 1
ret -71
result of a 'SANE_DEBUG_SANEI_USB=255 scanimage -h' :
[sanei_usb] sanei_usb_open: trying to open device `libusb:002:005'
USB error: could not set config 1: Protocol error
[sanei_usb] sanei_usb_open: libusb complained: could not set config 1:
Protocol error
scanimage: open of device niash:libusb:002:005 failed: Device busy
Any advice ?
TIA
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