Hello,

On Nov 20 14:37 Terry Spearman wrote (excerpt):
... USB ports
... 3.0 ports being blue and 2.0 ports being black

"In theory, theory and practice are the same.
 In practice, they are not."

See the section about "USB" in
https://en.opensuse.org/SDB:Configuring_Scanners

For more details and history see
https://alioth-lists.debian.net/pipermail/sane-devel/2016-November/034901.html
and follow the links therein, in particular see
https://alioth-lists.debian.net/pipermail/sane-devel/2015-December/034197.html

When your scanner can be only connected at your computer
at a USB port where the kernel module xhci_hcd is used
I think in the end the most convenient way to get out
of those troubles is the "ultimate way out" in
https://alioth-lists.debian.net/pipermail/sane-devel/2016-November/034901.html


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


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