[sane-devel] Epson 636u, libusb, kernel 2.6.3 I/O problem

[Christian Schaefer]

S Miller wrote:
> Epson 636U scanner fails with I/O error messages when configured using
> libusb, 2.6.3, sane backends (libsane) 1.0.13, and hotplug. System is
> Debian testing/unstable. This scanner has worked perfectly for over two
> years using the scanner.o driver. With 2.6.3 I was forced to
> reconfigure using libusb, since scanner.o is removed from the kernel
> configuration. I've read all the docs I can find, and feel reasonably
> sure that my configuration correct. The scanner is being found by
> sane-find-scanner and by scanimage -L (1st try only). Once a frontend
> (scanimage or xsane) has tried to access the scanner once, it hangs,
> and will not find the scanner again. Even though the scanner is found
> by scanimage or xsane on the first try, it won't operate at all. I've
> commented out all unused scanner lines in /etc/sane.d/dll.conf and
> verified that permissions are being set correctly. The problem occurs
> both as root and as a user member of the scanner group. Hopefully the
> output below (long) will give some clues as to what's happening. I
> would appreciate any suggestions, including where to file a bug report
> if appropriate.
[...]

Same problem here with a HP ScanJet 6300C and kernel 2.6.1, .2 and .3

Chris