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

Johannes Meixner jsmeix at suse.de
Thu Apr 28 07:21:48 UTC 2016

Hello Olaf,

On Apr 28 08:45 Olaf Meeuwissen wrote (excerpt):
> 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,

Many thanks for your explanation.

It helps a lot!

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

More information about the sane-devel mailing list