[Desktop-packages] [Bug 1728012] Re: Many 3rd party scanner drivers are broken by a sane change

[Hans Schwimmbeck]

I don't like MODE="0777" in the Epson derived example.

This works for me and _should_ work for all brscan3 devices:

# Brother brscan3 devices
ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="*", MODE="0664", GROUP="scanner", 
ENV{libsane_matched}="yes"

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https://bugs.launchpad.net/bugs/1728012

Title:
  Many 3rd party scanner drivers are broken by a sane change

Status in sane-backends package in Ubuntu:
  Confirmed

Bug description:
  Many scanners can no more be used since sane has changed something:
  The 3rd-party plug-in the vendor provides as .deb package will still
  install. But the scanner is no more recognized.

  Scanners that are affected are(besides others):
   - Epson Perfection V10
   - Epson Perfection V1000
   - Epson WorkForce GT-1500
   - Brother MFC-8510DN
   - Epson Perfection V33

  It is to note that the probability that the scanner manufacturers fix
  things others broke is below 100%.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: libsane1 1.0.27-1~experimental2ubuntu2
  Uname: Linux 4.14.0-041400rc5-lowlatency x86_64
  ApportVersion: 2.20.7-0ubuntu3.1
  Architecture: amd64
  Date: Fri Oct 27 12:35:52 2017
  EcryptfsInUse: Yes
  SourcePackage: sane-backends
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Desktop-packages] [Bug 1728012] Re: Many 3rd party scanner drivers are broken by a sane change

[Hans Schwimmbeck]

I forgot to mention that also needed is something like 
/etc/udev/rules.d/59-local.rules.
In my upgraded installation it has not changed since 16.04 and looks like this:
---
# Brother MFC-J220
ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="0259", MODE="0664", 
GROUP="scanner", ENV{libsane_matched}="yes"

---

Of course 'idProduct' has to match the local scanner model, 'lsusb' and
'sane-find-scanner' are your friends.

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https://bugs.launchpad.net/bugs/1728012

Title:
  Many 3rd party scanner drivers are broken by a sane change

Status in sane-backends package in Ubuntu:
  Confirmed

Bug description:
  Many scanners can no more be used since sane has changed something:
  The 3rd-party plug-in the vendor provides as .deb package will still
  install. But the scanner is no more recognized.

  Scanners that are affected are(besides others):
   - Epson Perfection V10
   - Epson Perfection V1000
   - Epson WorkForce GT-1500
   - Brother MFC-8510DN
   - Epson Perfection V33

  It is to note that the probability that the scanner manufacturers fix
  things others broke is below 100%.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: libsane1 1.0.27-1~experimental2ubuntu2
  Uname: Linux 4.14.0-041400rc5-lowlatency x86_64
  ApportVersion: 2.20.7-0ubuntu3.1
  Architecture: amd64
  Date: Fri Oct 27 12:35:52 2017
  EcryptfsInUse: Yes
  SourcePackage: sane-backends
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Desktop-packages] [Bug 1728012] Re: Many 3rd party scanner drivers are broken by a sane change

[Hans Schwimmbeck]

My Brother MFC-J220 works now with the 1.0.27-1~experimental2ubuntu2.1
packages.

The brscan3 driver installs files in /usr/lib64 and /usr/lib64/sane.
I linked them by
'sudo ln -sfr /usr/lib64/libbrscandec* /usr/lib/x86_64-linux-gnu'
and
'sudo ln -sfr /usr/lib64/sane/libsane-brother* /usr/lib/x86_64-linux-gnu/sane'

Thanks to staedtler-przyborski for the hint.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to sane-backends in Ubuntu.
https://bugs.launchpad.net/bugs/1728012

Title:
  Many 3rd party scanner drivers are broken by a sane change

Status in sane-backends package in Ubuntu:
  Confirmed

Bug description:
  Many scanners can no more be used since sane has changed something:
  The 3rd-party plug-in the vendor provides as .deb package will still
  install. But the scanner is no more recognized.

  Scanners that are affected are(besides others):
   - Epson Perfection V10
   - Epson Perfection V1000
   - Epson WorkForce GT-1500
   - Brother MFC-8510DN
   - Epson Perfection V33

  It is to note that the probability that the scanner manufacturers fix
  things others broke is below 100%.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: libsane1 1.0.27-1~experimental2ubuntu2
  Uname: Linux 4.14.0-041400rc5-lowlatency x86_64
  ApportVersion: 2.20.7-0ubuntu3.1
  Architecture: amd64
  Date: Fri Oct 27 12:35:52 2017
  EcryptfsInUse: Yes
  SourcePackage: sane-backends
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Desktop-packages] [Bug 1707352] Re: the change from libsane to libsane1 broke many (all?) 3rd party plug-ins for sane

[Hans Schwimmbeck]

I called the workaround "ugly", because it bypasses the apt package
management routines and there might be no easy way back when a working
upgrade is released.

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https://bugs.launchpad.net/bugs/1707352

Title:
  the change from libsane to libsane1 broke many (all?) 3rd party plug-
  ins for sane

Status in sane-backends package in Ubuntu:
  Fix Committed
Status in sane-backends source package in Artful:
  Fix Committed
Status in sane-backends package in Debian:
  New

Bug description:
  Impact
  ==

  1) The Debian maintainer renamed libsane to libsane1-experimental "to
  match with the soname". This apparently fixes a Lintian warning, but
  makes installing 3rd-party plug-ins hard, as they typically depend on
  "libsane", not on "libsane1". The first try to add a "Provides:
  libsane" to libsane1 (which created a virtual package) didn't make
  drivers installable that claim to depend on a minimum version of
  libsane as virtual packages are ignored in this case.

  2) The soname change might be justified by the new version breaking
  (several? most?) 3rd party plug-ins even if the library version number
  doesn't indicate any bigger change than any ordinary new version of
  the library - which might indicate that this phenomenon might be an
  upstream bug.

  libsane 1.0.25 in zesty includes libsane.so.1.25
  libsane1 1.0.27 in artful includes libsane.so.1.27

  It is to note that depending on the manufacturer for many old scanners
  there won't be new versions of the plug-ins that are recompiled like
  this.

  Test Case
  =
  Visit http://support.epson.net/linux/en/iscan_c.html
  Download the amd64 deb .tar.gz
  Unzip it.
  Install the iscan .deb from the core folder.

  It won't install before this SRU because it Depends: libsane

  Regression Potential
  
  The fix here was proposed to the Debian maintainer in July but there's been 
virtually zero response on it. In the meantime the workaround that was proposed 
initially has started to result in automatically uninstalling gtk - which makes 
the system basically useless.

  It doesn't seem like adding the Provides will make things any worse
  for third-party drivers but it has a goodme chance of making things
  better for some.

  Impossibility of workarounds
  
  Just installing an old version of libsane is impossible as it uninstalls 
libgtk (which depends on libsane1 which conflicts with libsane) making the 
system basically useless.

  Original Bug Report
  ===
  I don't know if that can be prevented in the long run. But both brscan (for 
my brother scanner) and iscan (for my epson scanners) have been broken by the 
change from libsane to libsane1. For iscan I have unpackaged the debian 
package, changed the dependency it contains from libsane to libsane1 and 
installed the changed package. But even then my epson scanners no more work 
leaving me without any scanner => Reporting a bug.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: libsane1 1.0.27-1~experimental1ubuntu2
  Uname: Linux 4.13.0-041300rc2-lowlatency x86_64
  ApportVersion: 2.20.6-0ubuntu4
  Architecture: amd64
  Date: Sat Jul 29 08:38:15 2017
  EcryptfsInUse: Yes
  SourcePackage: sane-backends
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Desktop-packages] [Bug 1707352] Re: the change from libsane to libsane1 broke many (all?) 3rd party plug-ins for sane

[Hans Schwimmbeck]

Hopefully this bug will be fixed eventually, but for now I found an ugly
workaround which made my Brother scanner (brscan3 driver) work again.

- Installed the equivs package.

- Purged libsane1 by 'sudo dpkg --purge --ignore-depends=libsane1
libsane1'.

- Installed the zesty versions of libsane, libsane-common and sane-utils
by 'sudo dpkg -i' and marked them not to be upgraded by 'sudo apt-mark
hold libsane libsane-common sane-utils'.

- Created a controlfile 'libsane1' by 'equivs-control libsane1' and edited it 
so that it looks like this:

### Commented entries have reasonable defaults.
### Uncomment to edit them.
# Source: 
Section: misc
Priority: optional
# Homepage: 
Standards-Version: 3.9.2

Package: libsane1
Version: 4:99
# Maintainer: Your Name 
# Pre-Depends: 
# Depends: 
# Recommends: 
# Suggests: 
# Provides: 
# Replaces: 
# Architecture: all
# Multi-Arch: 
# Copyright: 
# Changelog: 
# Readme: 
# Extra-Files: 
# Files: 
#  
Description: dummy package 
 dummy package for libsane1



- Built a dummy package libsane1_99_all.deb by 'equivs-build libsane1'
and installed it by 'sudo dpkg -i' to satisfy dependencies.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to sane-backends in Ubuntu.
https://bugs.launchpad.net/bugs/1707352

Title:
  the change from libsane to libsane1 broke many (all?) 3rd party plug-
  ins for sane

Status in sane-backends package in Ubuntu:
  Fix Committed
Status in sane-backends source package in Artful:
  Fix Committed
Status in sane-backends package in Debian:
  New

Bug description:
  Impact
  ==
  The Debian maintainer renamed libsane to libsane1-experimental "to match with 
the soname". This apparently fixes a Lintian warning. Also the soname change 
might be justified by the new version breaking most 3rd party plug-ins even if 
the library version number doesn't any bigger change than any ordinary new 
version of the library:

  libsane 1.0.25 in zesty includes libsane.so.1.25
  libsane1 1.0.27 in artful includes libsane.so.1.27

  The breaking of all plug-ins might be an upstream bug - which is allowed in 
an experimental package, but is unfortunate as in Ubuntu this package went 
mainstream; The library rename is an additional factor that makes it impossible 
to install any scanner drivers for libsane that are distributed as a .deb 
unless the driver distributors recompiles against Ubuntu 17.10+.
  It is to note that depending on the manufacturer for many old scanners there 
won't be new versions of the plug-ins that are recompiled like this;  Adding a 
Provides: libsane to the library might therefore make some plug-ins work, 
perhaps.

  Test Case
  =
  Visit http://support.epson.net/linux/en/iscan_c.html
  Download the amd64 deb .tar.gz
  Unzip it.
  Install the iscan .deb from the core folder.

  It won't install before this SRU because it Depends: libsane

  Regression Potential
  
  The fix here was proposed to the Debian maintainer in July but there's been 
virtually zero response on it. In the meantime the workaround that was proposed 
initially has started to result in automatically uninstalling gtk - which makes 
the system basically useless.

  It doesn't seem like adding the Provides will make things any worse
  for third-party drivers but it has a goodme chance of making things
  better for some.

  Impossibility of workarounds
  
  Just installing an old version of libsane is impossible as it uninstalls 
libgtk (which depends on libsane1 which conflicts with libsane) making the 
system basically useless.

  Original Bug Report
  ===
  I don't know if that can be prevented in the long run. But both brscan (for 
my brother scanner) and iscan (for my epson scanners) have been broken by the 
change from libsane to libsane1. For iscan I have unpackaged the debian 
package, changed the dependency it contains from libsane to libsane1 and 
installed the changed package. But even then my epson scanners no more work 
leaving me without any scanner => Reporting a bug.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: libsane1 1.0.27-1~experimental1ubuntu2
  Uname: Linux 4.13.0-041300rc2-lowlatency x86_64
  ApportVersion: 2.20.6-0ubuntu4
  Architecture: amd64
  Date: Sat Jul 29 08:38:15 2017
  EcryptfsInUse: Yes
  SourcePackage: sane-backends
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1707352/+subscriptions

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