Giuseppe, silly question: did you specify the location of the firmware (is required by the backend for the Epson Perfection 1670 as far as I know)?
Regards Wolfram Heider On Sun, 03 Aug 2008 21:05:41 +0200, Giuseppe Sacco <giuseppe at eppesuigoccas.homedns.org> wrote: > 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 > > >
