[sane-devel] Kernel claiming device?

[m. allan noah]

try it as root. if this works, then you have a permissions problem on the 
usb files in /proc. if you change the perms by hand, it will work, 
but only until you next reboot or unplug the device. hotplug/udev can be 
used to change these permanently.

allan

On Thu, 29 Jun 2006, Kerry Menzel wrote:

> Hi,
>
>
>
> I just bought an Avision AV220 scanner and I'm trying to get it going on
>
> RedHat ES 4 (2.6.9-5.EL). When I run sane-find-scanner, it finds the
>
> device at libusb:002:005. When I run scanImage -L, no scanners are
>
> detected. I put things in debug mode and I got the following output. I'm
>
> suspecting that the kernel has laid claim to the scanner. How do I get
>
> SANE to control the scanner or should I do something else????
>
> The permissions for /proc/bus/usb/002 are 777 and 666
>
> for /proc/bus/usb/002/005
>
>
>
> Thanks for the help!
>
>
>
> [avision] sane_init: parsing config line "usb 0x0638 0x0a23"
>
> [avision] sane_init: config file line 23: trying to attach USB:`usb
>
> 0x0638 0x0a23'
>
> [sanei_usb] sanei_usb_find_devices: vendor=0x0638, product=0x0a23
>
> [avision] attach:
>
> [avision] attach: opening libusb:002:005
>
> [sanei_usb] sanei_usb_open: trying to open device `libusb:002:005'
>
> Check that you have permissions to write to 002/005 and, if you don't,
>
> that you set up hotplug (http://linux-hotplug.sourceforge.net/)
>
> correctly.
>
> USB error: could not claim interface 0: Device or resource busy
>
> [sanei_usb] sanei_usb_open: libusb complained: could not claim interface
>
> 0: Device or resource busy
>
> [sanei_usb] Maybe the kernel scanner driver claims the scanner's
>
> interface?
>
> [avision] attach: open failed (Device busy)
>
> [avision] sane_init: Trying to find USB device 638 a27 ...
>
>

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