Carsten Maass a écrit :
Aurelien Jarno wrote:
Carsten Maass a écrit :
Package: libsane
Version: 1.0.18-3
Severity: important
My CanoScan N650U scanner doesn't work, allthough it gets listed by
sane-find-scanner:
# lsusb
Bus 001 Device 004: ID 04a9:2206 Canon, Inc. CanoScan N650U/N656U
Bus 001 Device 003: ID 04f9:0027 Brother Industries, Ltd
Bus 001 Device 002: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640
USB-2.0 "TetraHub"
Bus 001 Device 001: ID 0000:0000
# sane-find-scanner -q
found USB scanner (vendor=0x04a9, product=0x2206, chip=LM983x?) at
libusb:001:004
# SANE_DEBUG_PLUSTEK=255 SANE_DEBUG_SANEI_USB=255 scanimage -L
Could you please rerun this command with also USB_DEBUG=255 ?
Also, the output of lsusb -v would be interesting.
OK, here comes the full package:
# lsusb -v
cannot read device status, Protocol error (71)
Strange that you also get this error with libusb.
Could you please run "strace lsusb -v" and send me the result?
[plustek] gray Gamma : 1.00
[plustek] ---------------------
[plustek] usbDev_open(auto,0x04A9-0x2206) - 0x806d000
[sanei_usb] sanei_usb_open: trying to open device `libusb:001:004'
USB error: could not set config 1: Protocol error
[sanei_usb] sanei_usb_open: libusb complained: could not set config 1:
Protocol error
[plustek] sanei_usb_open failed: Protocol error (71)
[plustek] open failed: -1
[plustek] sane_get_devices (0xbf922cf8, 0)
[sanei_debug] Setting debug level of sanei_usb to 255.
It looks like the USBDEVFS_SETCONFIGURATION ioctl is not working
correctly. Could you please compile the small attached test program (gcc
-o testusb testusb.c). Then run it with /dev/bus/xxx/yyy as the first
argument, with xxx and yyy being the bus and device number return by lsusb.
Thanks,
Aurelien
--
.''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
: :' : Debian developer | Electrical Engineer
`. `' [EMAIL PROTECTED] | [EMAIL PROTECTED]
`- people.debian.org/~aurel32 | www.aurel32.net
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define IOCTL_USB_SETCONFIG _IOR('U', 5, unsigned int)
int main(int argc, char **argv)
{
int fd, ret;
unsigned int conf;
if (argc != 2)
{
printf("Error: need one argument\n");
exit(1);
}
fd = open(argv[1], O_RDWR);
if (fd < 0)
{
printf("Error: failed to open device %s\n", argv[1]);
exit(1);
}
conf = 1;
ret = ioctl(fd, IOCTL_USB_SETCONFIG, &conf);
printf("ret from ioctl: %i\n", ret);
close(fd);
return 0;
}
