[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

[Gunnar Hjalmarsson]

@Ananth: That was disappointing, but thanks for letting us know. The
version you mentioned for bionic has the very same patch as the disco
and eoan versions, so the (attempt at a) fix is already in the PPA for
bionic.

Simon's successful test was on 19.04.

@CoderGuy: Which Ubuntu version did you test on?

As regards LiDE 100 I see in the discussion on the upstream merge
request that Jens Böttge explicitly confirmed that the patch worked when
applied to the bionic version of sane-backends.

https://gitlab.com/sane-
project/backends/merge_requests/34#note_141760446

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https://bugs.launchpad.net/bugs/1731459

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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