rupesh- commands you might be interested in: tail /var/log/messages dmesg | tail lsusb lsusb -v
use these before and after you connect the device, to make sure it shows up. if it does not, you have basic usb issues that you need to address first. i would suggest moving to a more recent linux, something with a 2.6 kernel :) if the device shows up, then i would suggest that you try to build a little libusb program, entirely outside of sane, that can find and talk to the scanner. allan On Tue, 13 Jun 2006, Rupesh Tarpara wrote: > Hi, > > I am using Redhat AS 3, update 7. kernel string 2.4.21-40.EL. > > I am developing sane backend for USB hand held image scanner. > > Problem :- > > When I connect the USB device and run 'sane-find-scanner' command, it does > not detect my usb scanner. It displays error message as, 'make sure usb host > controller driver is installed and kernel scanner module is loaded'. > > 1) The files present in /dev/usb are :- > > scanner0 scanner10 scanner12 scanner14 scanner2 scanner4 scanner6 > scanner8 > scanner1 scanner11 scanner13 scanner15 scanner3 scanner5 scanner7 > scanner9 > > 2) the files present in /etc/hotplug are :- > > blacklist ieee1394.agent pci pci.rc usb.agent > usb.handmap usb.usermap > hotplug.functions net.agent pci.agent usb usb.distmap usb.rc > > 3) output of lsmod is:- > > Module Size Used by Not tainted > ide-cd 33920 0 (autoclean) > cdrom 32416 0 (autoclean) [ide-cd] > i810_audio 29784 0 (autoclean) > ac97_codec 17736 0 (autoclean) [i810_audio] > soundcore 6436 2 (autoclean) [i810_audio] > agpgart 57752 6 (autoclean) > audit 89944 2 (autoclean) > usbserial 23420 0 (autoclean) (unused) > parport_pc 18756 1 (autoclean) > lp 8964 0 (autoclean) > parport 36832 1 (autoclean) [parport_pc lp] > autofs4 16152 0 (autoclean) (unused) > e100 28264 1 > mii 4516 0 [e100] > floppy 56624 0 (autoclean) > sg 36236 0 (autoclean) (unused) > scsi_mod 107180 1 (autoclean) [sg] > microcode 5688 0 (autoclean) > keybdev 2944 0 (unused) > mousedev 5524 1 > hid 22244 0 (unused) > input 5888 0 [keybdev mousedev hid] > ehci-hcd 20008 0 (unused) > usb-uhci 25740 0 (unused) > usbcore 77408 1 [usbserial hid ehci-hcd usb-uhci] > ext3 85864 2 > jbd 50956 2 [ext3] > > ===========================================================================\ > > can anyone guide me what is wrong? Where to look for usb scanner device > file? > is it necessary to install, usb-serial port emulator driver(kernel module) > for scanner device on linux? (as usbserial module is already present) > > Thanks in advance, > > Rupesh Tarpara > > > > > > http://www.patni.com > World-Wide Partnerships. World-Class Solutions. > _____________________________________________________________________ > > This e-mail message may contain proprietary, confidential or legally > privileged information for the sole use of the person or entity to > whom this message was originally addressed. Any review, e-transmission > dissemination or other use of or taking of any action in reliance upon > this information by persons or entities other than the intended > recipient is prohibited. If you have received this e-mail in error > kindly delete this e-mail from your records. If it appears that this > mail has been forwarded to you without proper authority, please notify > us immediately at [email protected] and delete this mail. > _____________________________________________________________________ > -- "so don't tell us it can't be done, putting down what you don't know. money isn't our god, integrity will free our souls" - Max Cavalera
