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Date: Sun, 10 Jan 2010 12:44:10 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Hans Petter Selasky <hselasky@c2i.net>
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Cc: freebsd-usb@freebsd.org
Subject: Re: SANE vs USB scanner on 8.0
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On Sun, 10 Jan 2010, Hans Petter Selasky wrote:
> On Sunday 10 January 2010 18:42:52 Torfinn Ingolfsen wrote:

>> root@kg-v2# SANE_DEBUG_SNAPSCAN=255 scanimage -v -v -L
>> [sanei_debug] Setting debug level of snapscan to 255.
>> [snapscan] sane_snapscan_init
>> [snapscan] sane_snapscan_init: Snapscan backend version 1.4.53
>> [snapscan] add_usb_device(libusb:/dev/usb:/dev/ugen2.2)
>> [snapscan] add_usb_device: Detected (kind of) an USB device
>> [snapscan] snapscani_usb_open(libusb:/dev/usb:/dev/ugen2.2)
>> [snapscan] snapscani_mutex_open: could not parse device string: No such
>>  file or directory [snapscan] snapscani_usb_open: Can't get semaphore
>> [snapscan] add_usb_device: error opening device
>>  libusb:/dev/usb:/dev/ugen2.2: Invalid argument [snapscan]
>>  sane_snapscan_get_devices (0x7fffffffe220, 0)
>
> Try to find the source code that is printing those errors.

It's in graphics/sane-backends/work/sane-backends-1.0.20/backend/ in 
snapscan-mutex.c, line 135.

Looks to me like it wants "libusb:2:2" rather than 
"libusb:/dev/usb:/dev/ugen2.2".  Maybe an old format.

-Warren Block * Rapid City, South Dakota USA