Hi all, I am testing once again a new linux kernel for mips architecture (both 2.6.26-rc9 and 2.6.26.1). On this machine (SGI O2) I am trying an usb scanner (epson perfection 1670) without luck, but I suspect something is missing among kernel modules.
currently installed SANE is giuseppe at sgi:~$ LC_LANG=C dpkg -l \*sane\* | grep ^ii ii libsane 1.0.18-5 API library for scanners ii sane 1.0.14-2 scanner graphical frontends ii sane-utils 1.0.18-5 API library for scanners -- utilities What happens: when I plug in the usb cable, I get those new lines in syslog: [17221259.260000] usb 3-2: new high speed USB device using ehci_hcd and address 2 [17221259.440000] usb 3-2: configuration #1 chosen from 1 choice [17221259.496000] usb 3-2: New USB device found, idVendor=04b8, idProduct=011f [17221259.532000] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [17221259.564000] usb 3-2: Product: EPSON Scanner [17221259.596000] usb 3-2: Manufacturer: EPSON then a new device appears as /dev/bus/usb/003/002. This device is correctly owned by scanner group, so udev communicate with the scanner and correctly get vendor/product giuseppe at sgi:~$ find /dev/bus/usb/ -ls 1671 0 drwxr-xr-x 5 root root 100 ago 3 2008 /dev/bus/usb/ 1699 0 drwxr-xr-x 2 root root 80 ago 3 19:15 /dev/bus/usb/003 207260 0 crw-rw-r-- 1 root scanner ago 3 19:15 /dev/bus/usb/003/002 1700 0 crw-rw-r-- 1 root root ago 3 19:17 /dev/bus/usb/003/001 1691 0 drwxr-xr-x 2 root root 60 ago 3 2008 /dev/bus/usb/002 1692 0 crw-rw-r-- 1 root root ago 3 19:17 /dev/bus/usb/002/001 1672 0 drwxr-xr-x 2 root root 60 ago 3 2008 /dev/bus/usb/001 1673 0 crw-rw-r-- 1 root root ago 3 19:17 /dev/bus/usb/001/001 libusb might use /proc/bus/usb instead of /dev/bus/usb, so check it: giuseppe at sgi:~$ find /proc/bus/usb/ -ls 1430 0 drwxr-xr-x 5 root root 0 ago 3 21:19 /proc/bus/usb/ 1486 0 dr-xr-xr-x 2 root root 0 ago 3 21:19 /proc/bus/usb/003 207166 0 -rw-r--r-- 1 root root 57 ago 3 19:15 /proc/bus/usb/003/002 1490 0 -rw-r--r-- 1 root root 43 ago 3 21:19 /proc/bus/usb/003/001 1474 0 dr-xr-xr-x 2 root root 0 ago 3 21:19 /proc/bus/usb/002 1482 0 -rw-r--r-- 1 root root 43 ago 3 21:19 /proc/bus/usb/002/001 1432 0 dr-xr-xr-x 2 root root 0 ago 3 21:19 /proc/bus/usb/001 1470 0 -rw-r--r-- 1 root root 43 ago 3 21:19 /proc/bus/usb/001/001 1431 0 -r--r--r-- 1 root root 0 ago 3 19:15 /proc/bus/usb/devices why /proc/bus/usb/003/002 is not owned by scanner group? sane-find-scanner doesn't find any scanner. Logging sanei_usb I see: giuseppe at sgi:~$ env SANE_DEBUG_SANEI_USB=255 sane-find-scanner [sanei_debug] Setting debug level of sanei_usb to 255. [sanei_usb] sanei_usb_init: Looking for kernel scanner devices [sanei_usb] sanei_usb_init: can't stat /dev/usb/: No such file or directory [sanei_usb] sanei_usb_init: Looking for libusb devices usb_set_debug: Setting debugging level to 255 (on) usb_os_find_busses: Found 003 usb_os_find_busses: Found 002 usb_os_find_busses: Found 001 usb_os_find_devices: Couldn't open /dev/bus/usb/003/002 usb_os_find_devices: couldn't get connect info [...] currently loaded modules are: giuseppe at sgi:~$ lsmod | egrep 'usb|hcd' ehci_hcd 64240 0 ohci_hcd 37040 0 usbcore 223696 3 ehci_hcd,ohci_hcd finally, why lsusb does not list the scanner? giuseppe at sgi:~$ lsusb Bus 003 Device 001: ID 1d6b:0001 Bus 002 Device 001: ID 1d6b:0001 Bus 001 Device 001: ID 1d6b:0001 giuseppe at sgi:~$ sudo lsusb Password: Bus 003 Device 001: ID 1d6b:0001 Bus 002 Device 001: ID 1d6b:0001 Bus 001 Device 001: ID 1d6b:0001 Many thanks to all, Giuseppe
