Bug 653300

Summary:	>=media-gfx/sane-backends-1.0.27 does not recognize Samsung SCX-4725FN scanner
Product:	Gentoo Linux	Reporter:	edes <edes>
Component:	Current packages	Assignee:	No maintainer - Look at https://wiki.gentoo.org/wiki/Project:Proxy_Maintainers if you want to take care of it <maintainer-needed>
Status:	RESOLVED FIXED
Severity:	normal	CC:	edes
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description edes 2018-04-16 12:42:53 UTC

After upgrading to 1.0.27, sane-backends ceased to recognize my Samsung SCX-4725FN scanner. The same happens with 1.0.27-r1. This model always worked perfectly well with the xerox_mfp backend.

I'm afraid I don't know what additional information I could give, it's just that sane doesn't see the scanner. Downgrading to 1.0.25-r1 solves the problem and I can scan as usual. 

A web search suggest that other Samsung scanners might have the same problem.

Comment 1 Larry the Git Cow gentoo-dev

2018-10-20 16:36:03 UTC

The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b4a4aa9c04d755547aa82b881499fd7a6172bfc9

commit b4a4aa9c04d755547aa82b881499fd7a6172bfc9
Author:     Pacho Ramos <pacho@gentoo.org>
AuthorDate: 2018-10-20 15:11:29 +0000
Commit:     Pacho Ramos <pacho@gentoo.org>
CommitDate: 2018-10-20 16:35:31 +0000

    media-gfx/sane-backends: Fixes from Fedora and Debian...
    
    They fix an important bug with Samsung devices not being properly recognized
    and noises in some devices.
    
    We also start disabling locking as all the other distributions and stop
    trying to randomly generate extra documentation files that are not really
    needed and add a lot of hidden dependencies tend to break in several ways.
    
    Closes: https://bugs.gentoo.org/636202
    Closes: https://bugs.gentoo.org/653300
    Closes: https://bugs.gentoo.org/668232
    Closes: https://bugs.gentoo.org/668350
    Signed-off-by: Pacho Ramos <pacho@gentoo.org>
    Package-Manager: Portage-2.3.51, Repoman-2.3.11

 .../sane-backends-1.0.27-revert-samsung.patch      | 406 +++++++++++++++++++++
 ...ne-backends-1.0.27-uninitialized-variable.patch |  25 ++
 .../sane-backends/sane-backends-1.0.27-r2.ebuild   | 344 +++++++++++++++++
 3 files changed, 775 insertions(+)

Comment 2 edes 2018-10-22 16:57:19 UTC

It's working now again with my Samsung SCX-4725FN, thank you!

There's only one minor problem: it spends a long time scanning for devices, and it takes like half a minute to recognize the printer/scanner. Previous versions recognized the device immediately.

Other than that, it's working fine.

Comment 3 Pacho Ramos gentoo-dev

2018-10-31 18:23:06 UTC

Maybe that is caused by this fix:
eapply "${FILESDIR}"/${PN}-1.0.27-uninitialized-variable.patch

you can try commenting that line to see if it improves again