Congratulations, great work Luca. And big relief ...
So I summarize the workarounds as follows (no need to crawl through this
lengthy bug report):
I.Brother:
1. brscan, brscan2, brscan3
a) 'sudo ln -sfr /usr/lib64/libbr* /usr/lib/x86_64-linux-gnu'
b) 'sudo ln -sfr /usr/lib64/sane/libsane-brother*
/usr/lib/x86_64-linux-gnu/sane'
c) generate '/etc/udev/rules.d/59-udev-local.rules'
content:
# Brother brscan devices
ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="*", MODE="0664", GROUP="scanner",
ENV{libsane_matched}="yes"
2. brscan4
a) execute 'lsusb' to get VendorId (04f9) and ProductID
b) create '/etc/udev/hwdb.d/brother4.hwdb'
content:
usb:v04F9pYYYY* (pYYYY is product ID from lsusb, Example: usb:v04F9p035D, 04f9
is vendor ID, and 035d is product ID for BrotherMFC-1910W")
libsane_matched=yes
c) edit '/etc/sane.d/dll.d/libsane-extras'
add 'brother4'
II. Epson Iscan
a) 'sudo ln -sfr /usr/lib/sane/libsane-epkowa* /usr/lib/x86_64-linux-gnu/sane'
b) generate '/etc/udev/rules.d/79-udev-epson.rules'
content:
# chmod device EPSON group
ATTRS{manufacturer}=="EPSON", DRIVERS=="usb", SUBSYSTEMS=="usb",
ATTRS{idVendor}=="04b8", ATTRS{idProduct}=="*", MODE="0777"
III. Xerox Workcentre 3225
a) 'sudo ln -sfr /usr/lib/sane/libsane-smfp* /usr/lib/x86_64-linux-gnu/sane'
b) 'sudo adduser $USER lp'
For me this looks like we have several bugs in one ;-)
e.g. III b) happens also on other libsane 1.0.27 installations and seems
a libsane bug (at least it is listed there as bug)
Hopefully all this becomes obsolete with Ubuntu 18.04 ....
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https://bugs.launchpad.net/bugs/1728012
Title:
Many 3rd party scanner drivers are broken by a sane change
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