*** This bug is a duplicate of bug 195782 ***
https://bugs.launchpad.net/bugs/195782
I think this is no dup of the scanner group problem, as even root cannot
scan:
This seems to exist for any usb scanner, as some searching showed me.
I have the same problem using a brother mfc-215c (brother native backend).
It worked like a charm util i did a (debian) update. Now the same error
occurs: failed to start scanner: invalid argument
scanimage returns:
[code]
scanimage: sane_start: Invalid argument
[/code]
and strace scanimage shows this:
[code]
open("/dev/bus/usb/001/002", O_RDWR) = 181
ioctl(181, USBDEVFS_SETCONFIGURATION, 0xbffdff94) = -1 EBUSY (Device or
resource busy)
ioctl(181, USBDEVFS_CLEAR_HALT, 0xbffdff94) = 0
ioctl(181, USBDEVFS_CLAIMINTERFACE, 0xbffdffc4) = 0
[/code]
maybe also a bug in libusb?
lsusb output is:
[code]
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 04f9:0193 Brother Industries, Ltd MFC-215C
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[/code]
** Attachment added: "strace scanimage output for Brother brscan2 model
MFC-215C attached to usb"
http://launchpadlibrarian.net/22674530/trace.log
--
Detected scanner fails to load with "Invalid Argument"
https://bugs.launchpad.net/bugs/24946
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