[SOLVED] Epson Scanner CX4800

[sdimhoff]

I've had an epson all in one CX4800 for quite awhile and the initial setup is not very difficult, however as of last week I am no longer able to scan documents. When I attempt to use it I get the error:

Failed to start scanner: Device Busy

Output of sane-find-scanner

 sane-find-scanner 

found USB scanner (vendor=0x04b8 [EPSON], product=0x0819 [USB2.0 MFP(Hi-Speed)]) at libusb:001:007

Now we see where the problem starts with scanimage:

scanimage -L
No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).

I've had a problem in the past which had the same symptoms, but it was due to a kernel incompatability with usb-storage and usblp modules and my scanner setup (I think it was in kernel versions 2.6.9 to 2.6.17 or so). I've tried to disable these modules, but as expected it didn't help.

Anyone have any ideas?

[sdimhoff]

Well, the scanner still doesn't work, but for some reason (I didn't make any changes to any config files or anything) scanimage -L now reads a scanner present.

scanimage -L
device `epkowa:libusb:001:007' is a Epson Stylus CX4700/CX4800/DX4800 flatbed scanner


However, as I mentioned:

scanimage
scanimage: sane_start: Device busy

[sdimhoff]

I know this is a very old thread, but I just realized I never posted my solution.

As it turned out, so long ago, the sudden stop in functionality had to do with dependency issues. This was fixed (in gentoo) by doing a reverse dependency rebuild.

As a general rule, I ususally do a pretend rebuild, then perform the package updates manually. It gives me a chance to more fully inspect the list of problem packages:

revdep-rebuild --pretend
emerge [the list from above]

All fixed. I've come to find that if problems in gentoo occur all-of-the-sudden, this is not a bad thing to check.