Sebastian Reichelt wrote: >Hello! > >I have a Tevion MD9458 scanner which I would like to get to work with >Linux. Apparently it is supported by SANE, and sane-find-scanner detects >it correctly. However, when I try to access it with xsane or scanimage, >I get the message: > >open of device gt68xx:libusb:002:... failed: Invalid argument > >This happens when I am root or a normal user with appropriate >permissions. The right number increases every time I try this, as >somehow the file /proc/bus/usb/002/027 disappears and a new file >/proc/bus/usb/002/028 appears, and so on. > > This happened to me before I learned that my kernel was loading hpusbscsi. There are apparently some problems with this module--documented in this list's archive. I recommend that you run `lsmod` to see if this module is loaded. If it is, here's what I did:
1. Turn off the scanner--I unplugged mine. 2. run `modprobe -r hpusbscsi 3. Turn on the scanner 4. `scanimage -L 5. `xscanimage` [backend-name]:libusb:AAA:BBB, where AAA:BBB would be 002:027 or 002:028 from your info above. If this works, rename hpusbscsi in your kernels driver directory and you might be "good to go." If it's not hpusbscsi, I'm sorry that I don't have enough expertise to provide any other recommendations. Good luck, Dan
