Comment 233 for bug 1728012

I am having issues myself, but I think mine are related to running ubuntu
in a VM on Windows.

I got IT to set aside an unused desktop pc for me to load and run it on
(they say its now on my desk...). Should have results tomorrow or Tuesday.

On Sun, Jun 30, 2019 at 6:20 PM Gunnar Hjalmarsson <
<email address hidden>> wrote:

> The annoyance with Brother .deb files for scanner drivers installing in
> /usr/lib64/sane has been mentioned multiple times above. The PPA now
> includes a proposed fix of that for eoan, disco and bionic.
>
> To be able to test myself, I breathed new life into my old Brother MFC-
> 240C. On disco it works fine, albeit after a few preparations - it's one
> of those 'unsupported' devices, after all. These are the preparations in
> my case:
>
> * Install the driver brscan2-0.2.5-1.amd64.deb
>
> * Add myself to the lp group:
>
> sudo adduser $USER lp
>
> * Add a libsane rule for Brother:
>
> $ cat /lib/udev/rules.d/60-libsane-brother.rules
> ATTRS{idVendor}=="04f9", ENV{libsane_matched}="yes"
>
> * Make the system know about .so files in /usr/lib64:[1]
>
> $ cat /etc/ld.so.conf.d/and-lib64-too.conf
> # for scanner driver installed by brscan2
> /usr/lib64
>
> and to update /etc/ld.so.cache:
>
> sudo ldconfig
>
> * Reboot
>
> [1]: The proposed fix makes sane find files in /usr/lib64/sane, but
> brscan2 also installs .so files directly in /usr/lib64, and the fix
> doesn't help for those. I could have created symlinks instead, but chose
> to do it this way.
>
> Anyway, after the reboot I can scan using simple-scan or xsane. On
> disco, that is.
>
> As regards bionic I have not been able to make it work. At all. Besides
> the proposed package in the PPA, I tried to build sane-backends for
> bionic using the eoan source. No problem with the build and install, but
> still "No scanners detected" when trying to scan. I've tried it on two
> computers.
>
> So please let me know: Can you scan on bionic - at all? And if you can,
> does the proposed package in the PPA make it easier for you?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> 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:
> Fix Released
> Status in sane-backends source package in Bionic:
> In Progress
> Status in sane-backends package in Debian:
> Fix Released
>
> Bug description:
> [Impact]
>
> * Starting with Ubuntu 17.10, Ubuntu changed the directory where sane
> dll looks for third party drivers. This configuration effectively
> broke backward compatibility for all existing third-party drivers.
>
> * A large swath of these third party drivers (most of them) are no
> longer supported by the OEM, so maintaining compatibility is
> important.
>
> * No open source replacement drivers are currently available, nor
> does the community have the resources to easily replace them.
>
> * This bug represents a substantial portion of the scanners in use.
>
> Scanners known to be affected include, but are not limited to:
>
> - Brother Scanners (all Brother scanners before brscan4)
> - DCP-145C
> - DCP-163C
> - DCP-165C
> - DCP-167C
> - DCP-185C
> - DCP-195C
> - DCP-197C
> - DCP-365CN
> - DCP-373CW
> - DCP-375CW
> - DCP-377CW
> - DCP-383C
> - DCP-385C
> - DCP-387C
> - DCP-395CN
> - DCP-585CW
> - DCP-6690CW
> - DCP-7030
> - DCP-7040
> - DCP-7045N
> - DCP-8070D
> - DCP-8080DN
> - DCP-8085DN
> - DCP-9010CN
> - DCP-9040CN
> - DCP-9042CDN
> - DCP-9045CDN
> - DCP-J125
> - DCP-J315W
> - DCP-J515W
> - DCP-J715W
> - MFC-250C
> - MFC-255CW
> - MFC-257CW
> - MFC-290C
> - MFC-295CN
> - MFC-297C
> - MFC-490CW
> - MFC-495CW
> - MFC-5490CN
> - MFC-5890CN
> - MFC-5895CW
> - MFC-6490CW
> - MFC-6890CDW
> - MFC-7320
> - MFC-7340
> - MFC-7345N
> - MFC-7440N
> - MFC-7450
> - MFC-7840N
> - MFC-7840W
> - MFC-790CW
> - MFC-795CW
> - MFC-8370DN
> - MFC-8380DN
> - MFC-8480DN
> - MFC-8510DN
> - MFC-8680DN
> - MFC-8880DN
> - MFC-8890DW
> - MFC-9010CN
> - MFC-9120CN
> - MFC-9320CW
> - MFC-9440CN
> - MFC-9450CDN
> - MFC-9840CDW
> - MFC-990CW
> - MFC-J220
> - MFC-J265W
> - MFC-J270W
> - MFC-J410
> - MFC-J410W
> - MFC-J415W
> - MFC-J615W
> - MFC-J630W
>
> - Dell MFP Laser Printer 1135n
>
> - Epson Scanners
> - All scanners supported by the libsane-epk driver
> - All scanners supported by the iscan driver
> - Epson Perfection V10
> - Epson Perfection V1000
> - Epson WorkForce GT-1500
> - Epson Perfection V33
>
> - Samsung M2070
>
> - Xerox Workcentre 3225
>
> * This was working in the 17.04 release. 18.10 is an LTS release, so
> backporting is warranted for the 18.10 release.
>
> [Test Case]
>
> * Following the standard installation procedures for any of the
> affected scanner drivers results in the driver files being installed
> to /usr/lib/sane/, and sane looking for them in /usr/lib/x86_64-linux-
> gnu/sane. When xsane is run, the scanner is not found.
>
> [Regression Potential]
>
> * Regression to previous working sane package often results in the
> automatic removal of core system components (documented in the
> comments to this bug report), making regression an unusable option for
> addressing this bug.
>
> * The available patch is functional and stable in the 19.10 branch.
>
> [Other Info]
> * Third party sane drivers in previous version of sane were located
> under /usr/lib/sane/, however, the current version of sane on Ubuntu only
> looks for 64 bit drivers under the /usr/lib/x86_64-linux-gnu/sane
> directory. /usr/lib64 and /usr/lib64/sane are other directories old drivers
> are known to install files to.
>
> * The addition of symlinks alone does not appear to fix this issue,
> though it may make the scanner detectable. Changes to udev rules are
> also needed to allow proper communications to the scanners. A
> selection of workarounds, including working (though not ideal) udev
> rules for a number of scanners has been posted to the sane
> troubleshooting guide:
>
> help.ubuntu.com/community/sane_Troubleshooting#The_symlink_and_udev_tricks
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1728012/+subscriptions
>