On Mon, 31 May 2004, David Härdeman wrote: > Hi, > > I'm currently trying to get an HP 6200C USB scanner to work with SANE > (1.0.14) under Linux (Debian woody with some backports, kernel 2.4.26). > Whenever I scan something which requires a low amount of data (lineart > picture at 100dpi for instance), everything works just fine. But when I > scan a more bandwidth hungry pic, it never succeeds. I've tried this > both with the "scanner" module in the kernel and with libusb but both > seem to experience the same problems. > > I have tried sane's "dumb-read" option and all other option which were > mentioned in the sane-hp man page but I'm running out of ideas. Any > clues what might cause this (might later kernels be too picky with their > timing requirements)? > > TIA, > David > [email protected]
The most likely explanation is that some other program (possibly a hotplug utility) is trying to access the scanner while you're using it, thereby confusing the scanner and causing it to fail. I've seen reports from other people where the "usbmodules" program did this. See what happens if you turn off all hotplug support. Alan Stern
