Public bug reported:

I just picked up one of these portable scanners, it works well in
Windows.

In Linux and either xsane or simple-scan however it always scans a
completely black page.

Thinking it was a calibration issue I ran:-

SANE_DEBUG_GENESYS=255 scanimage -d genesys --calibrate 2>calibrate.log

Which at first reported it couldn't find the correct sheet. I made one
using:
http://www.fixya.com/support/t17003105-calibration_sheet_visioneer_roadwarrior
and the errors went away

This is resolved. The calibration value "01 e8 00 00 00" is written.
There is still an error in the log but it appears to be OK. I'm unsure
if it's calibration anyhow as it worked OK-ish in Windows (washed out,
but had an image).

Scans are still completely black.

** Affects: simple-scan (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "calibrate.log"
   
https://bugs.launchpad.net/bugs/1712663/+attachment/4937663/+files/calibrate.log

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https://bugs.launchpad.net/bugs/1712663

Title:
  Visioneer RoadWarrior Scanner [Sane]

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