epson2 vs epson: simple-scan fails to scan: invalid argument

[steve.horsley]

Simple-scan appears to detect my scanner properly (Epson Perfection 640 USB scanner) but when I try to start a scan it pops up an error box saying "Failed to scan, unable to start scan". When running from command line, it prints this error message:

steve@steve-desktop:~$ simple-scan

** (simple-scan:2477): WARNING **: Unable to start device: Invalid argument

PROPOSED WORKAROUNG / SOLUTION:
in /etc/sane.d/dll.conf, comment out "epson2" and un-comment "epson".
PROPOSED WORKAROUNG / SOLUTION:

[schaffra (gero-schaffran-de)]

The same bug with Epson Perfection 610 USB scanner

[steve.horsley (steve-horsley)]

Fault still exists in release version of Ubuntu 10.10 i386 Desktop.

[steve.horsley (steve-horsley)]

I found a fix someone else posted:
http://ubuntu-ky.ubuntuforums.org/showthread.php?p=9943325
In summary:
Edit /etc/sane.d/dll.conf, comment out the line "epson2" and un-comment the line "epson".

[Ryan Harper (raharper)]

I can confirm the above fix.

[Ryan Harper (raharper)]

Tested with Epson Perfection 640U on Ubuntu 10.10 x86_64 desktop.

[schaffra (gero-schaffran-de)]

The fix works with the Epson 610 too.

[YannTech (yanntech)]

this workaround works with my Epson CX5400.

[mlaverdiere (mlaverdiere)]

Same thing here with Epson CX5400: fix from steve-horsley works.

[Camilio (camille-gonnet-free)]

Confirm the fix works for Epson Perfection 640 on i386

[Michael Nagel (nailor)]

Does changing this setting make it work/fail with xsane, too? If this is the case, this is not a problem with Simple Scan but with something further down the chain, probably sane-backends.

[Launchpad Janitor (janitor)]

[Expired for simple-scan (Ubuntu) because there has been no activity for 60 days.]