[sane-devel] Re: connecting to Epson PX-A550 (CX4600)
David D. Smith
Sat, 09 Apr 2005 04:13:56 +0900
"Olaf" =3D=3D Olaf Meeuwissen <email@example.com> writes:
Olaf> Please note that the epkowa backend is NOT part of
Olaf> sane-backends. It is part of Image Scan! for Linux (and
Olaf> Debian's libsane-extras package =3D 22.214.171.124). From your log it
Olaf> looks like you're using the latter.
Correct, I compiled from the Debian libsane-extras=3D126.96.36.199 sources
with debugging so I could trace scanimage in gdb. Should I try CVS?
>> [epkowa] send buf, size =3D 2
>> [epkowa] buf 1b .
>> [epkowa] buf 40 @
>> [sanei_usb] sanei_usb_write_bulk: trying to write 2 bytes
>> [sanei_usb] 0000: 1B 40 .@.............. USB error: error
>> submitting URB: No such file or directory
Olaf> Looks like there is something fishy with your USB. Does the
Olaf> device listed above (in this log libusb:002:014) exist? That
Olaf> is, does /proc/bus/usb/002/014 exist? What permissions are
Olaf> set on /proc/bus/usb/002?
Yes, the device is present. The permissions are 644 root:root but if I
run the test as root or if I change the perms to 664 root:users (and
I'm in the users group), it fails either way with the same log,
"submitting URB: No such file or directory."
Olaf> FYI, on Debian testing, your scanner works fine with this
Olaf> version of the epkowa backend and kernel version 2.6.8. #
Olaf> Compiled from the Image Scan! for Linux sources.
I have a feeling it's something fishy with my USB host controller,
although it has worked perfectly since 2.6.9 with anything I throw at
it, but it could just be my laptop. Do you know how I can debug this
further or get you more information? Everything that I can see with
gdb and strace looks fine.
David D. Smith
A man without doubt is a monster.
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