[Bug 1731459] Re: genesys_gl847 scanners produce a black band in scanned images on Ubuntu 17.10+, 18.04 LTS and 18.10 Cosmic cuttlefish

[CoderGuy]

@Gunnar,

I've just verified the package in the PPA and like Simon I can say that
it resolves the issue on LiDE 200 devices. I made 10 scans and the bar
was not present in any of the images.

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Title:
  genesys_gl847 scanners produce a black band in scanned images on
  Ubuntu 17.10+,  18.04 LTS and 18.10 Cosmic cuttlefish

Status in sane-backends:
  Unknown
Status in sane-backends package in Ubuntu:
  In Progress
Status in sane-backends source package in Bionic:
  In Progress
Status in sane-backends source package in Disco:
  In Progress
Status in sane-backends package in Debian:
  Unknown

Bug description:
  [Impact]

  When using a Genesys GL847 scanner, the documents get disfigured by a
  discolored bar. The proposed uploads should fix the issue. They are
  available in this PPA:

  https://launchpad.net/~gunnarhj/+archive/ubuntu/sane-backends

  [Test case]

  1. Install the libsane (libsane1 in bionic), libsane-common
     and sane-utils packages from {bionic,disco]-proposed.

  2. Use an affected device to scan, and find that the issue is
     no longer present.

  [Regression risk]

  Upstream commit, focused bug fix => low regression risk

  [Original description]

  On Windows it works but on my Ubuntu 17.10, 18.04 and 18.10 I see a
  black band on scanned image. The scanner is Canon CanoScan LIDE100.
  Libsane version is 1.0.27-1~experimental2ubuntu1

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