Comment 92 for bug 1707352

The funny thing is: scanimage -L does not work.
Then I do something on the system and change things and after 1 hour of changing scanimage -L works fine. The next day same again: not work. So my experience is: if you run scanimage many times, it becomes better and better and at the end it works. No matter what you changed. So it may happen that it does not work without sudo and then work with sudo. But its not the "sudo". It's because you tried 5 times.

Here is the command for debugging:

user@ubuntu1:home$ SANE_DEBUG_SANEI_CONFIG=3 SANE_DEBUG_SANEI_USB=128 SANE_USB_WORKAROUND=0 SANE_DEBUG_DLL=128 SANE_DEBUG_EPSON2=128 scanimage -L