[Bug 976813] New: OS 13.2 broke scanner functionality
http://bugzilla.suse.com/show_bug.cgi?id=976813 Bug ID: 976813 Summary: OS 13.2 broke scanner functionality Classification: openSUSE Product: openSUSE Distribution Version: 13.2 Hardware: x86-64 OS: openSUSE 13.2 Status: NEW Severity: Major Priority: P5 - None Component: Other Assignee: bnc-team-screening@forge.provo.novell.com Reporter: jcdole@free.fr QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Created attachment 674194 --> http://bugzilla.suse.com/attachment.cgi?id=674194&action=edit success mesg on 13.1 Cannot use scanner any more with 13.2 or leap 42.1 Scanner driver have not been changed since I use it in 13.1 -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #1 from Jean-Claude Dole
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Johannes Meixner
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c3
--- Comment #3 from Jean-Claude Dole
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c4
--- Comment #4 from Jean-Claude Dole
We (i.e. openSUSE) do not provide the scanner driver "epkowa" that you use, cf. https://bugzilla.suse.com/show_bug.cgi?id=975881#c1
You don't read the bug report. The bug report has nothing to do with the scanner hardware nor the scanner driver. The bug report is relative to a bug in 13.2 -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.suse.com/show_bug.cgi?id=976813
http://bugzilla.suse.com/show_bug.cgi?id=976813#c5
Johannes Meixner
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c6
--- Comment #6 from Johannes Meixner
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Johannes Meixner
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c10
--- Comment #10 from Johannes Meixner
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Johannes Meixner
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c11
--- Comment #11 from Johannes Meixner
[...] Now I wonder if the "epkowa" backend could be also affected by the current sane-backends 1.0.25 "Workaround for USB3 problems in Linux kernel" that seems to no longer work with newest kernels, cf. http://lists.alioth.debian.org/pipermail/sane-devel/2016-January/034254.html
In other words, I wonder if the "epkowa" backend uses the sane-backends USB code or if the "epkowa" backend implements USB communication on its own.
The epkowa backend uses its own *copy* of the sanei_usb code. There was a minor fix for USB 3.0 connected scanners in 2.30.1 (dated 2014-12-03). That same fix was applied to sane-backends on 2014-12-10. Please note that iscan does *not* actively track changes to the sane-backends version of the sanei_usb code. Also, iscan-2.30.1 is the most recent version.
In the end I like to understand if a version change of the installed sane-backends software on the user's computer could make a difference whether or not the "epkowa" backend works with the xhci_hcd kernel module.
That is rather unlikely but not impossible as it may depend on what other backends do during their sane_init() and sane_get_devices(). If all other backends are disabled, changing the version of the installed sane-backends should not make a difference. That is because the dll backend doesn't do anything USB related itself. Hope this helps, Olaf Meeuwissen, LPIC-2 FLOSS Engineer -- EPSON AVASYS CORPORATION --------------------------------------------------------------------------- This means that in contrast to https://bugzilla.opensuse.org/show_bug.cgi?id=975866#c2 where an upgrade to sane-backends version 1.0.25 made the sane-backends driver "plustek" work with xhci_hcd it is rather unlikely that another sane-backends version makes the third-party "epkowa" driver work with xhci_hcd. The only way - as far as I understand it - how a different sane-backends version could even make the "epkowa" driver work with xhci_hcd is when sane-backends drivers are also enabled in /etc/sane.d/dll.conf - for example either the sane-backends driver epson or alternatively epson2. But this is basically only blind guess. In the end when there are issues with third-party drivers nobody - except the authors of the third-party software - can provide real help and support because nobody - except the authors - know how their software really works. In this case you can only contact those wherefrom you got the third-party software for any kind of real help and support. See "Third-Party Scanner Drivers" in https://en.opensuse.org/SDB:Configuring_Scanners -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #12 from Jean-Claude Dole
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--- Comment #13 from Johannes Meixner
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--- Comment #14 from Jean-Claude Dole
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Jean-Claude Dole
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c16
--- Comment #16 from Jean-Claude Dole
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c17
Johannes Meixner
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c18
--- Comment #18 from Johannes Meixner
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--- Comment #19 from Jean-Claude Dole
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http://bugzilla.suse.com/show_bug.cgi?id=976813#c20
--- Comment #20 from Jean-Claude Dole
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Tomáš Chvátal
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