[sane-devel] Is the Iscan backend "epkowa" also affected by USB3 issues?

[Johannes Meixner]

Hello Olaf Meeuwissen,

we (i.e. openSUSE) got an issue report of a user
who uses the "epkowa" backend for an
Epson GT-X770 / Perfection V500
at a USB port with the xhci_hcd kernel driver module
which does not work, cf.
https://bugzilla.opensuse.org/show_bug.cgi?id=976813

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.

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.


Kind Regards
Johannes Meixner
-- 
SUSE LINUX GmbH - GF: Felix Imendoerffer, Jane Smithard,
Graham Norton - HRB 21284 (AG Nuernberg)