Slightly updated patch instructions from above.
--- CUT HERE ---
sudo apt-get install dpkg-dev fakeroot
# in Synaptic, Ubuntu Settings >> Repositories, enable "Source code"
apt-get source libsane1
# eyeball first for any error messages
patch sane-backends-1.0.27/backend/genesys.c --dry-run < genesys.c.diff
# if the above was successful
patch sane-backends-1.0.27/backend/genesys.c < genesys.c.diff
sudo apt-get build-dep libsane1
cd sane-backends-1.0.27
./configure
dpkg-buildpackage -rfakeroot -uc -b
cd ..
sudo rm /usr/share/doc/libsane1/changelog.Debian.gz
sudo dpkg -i libsane1_1.0.27-1~experimental3ubuntu2_amd64.deb
# reboot
--- CUT HERE ---
Also:
- If any of the steps above fails, examine the entire output carefully
line by line for error information about any possible missing packages,
e.g. "Check if the 'dpkg-dev' package is installed". Simply use "sudo
apt-get install <package>" to install anything that is missing.
- Unless you lock the libsane1 package in apt ("sudo apt-mark hold
<package>") and in Synaptic (Synaptic >> Package >> Lock Version), your
next automated or manual Ubuntu update might re-install the original,
unpatched libsane1 package. Those two package maintenance systems use
independent locking mechanisms that are not synchronized.
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Bugs, which is subscribed to Ubuntu.
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
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1731459/+subscriptions
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