User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:35.0) Gecko/20100101
Firefox/35.0
Build Identifier: 

In short, the scanner works just once and then things hang. Sometimes
reconnecting it "fixes" things for a short while, but it is essentially
unusable.

I have tested this scanner with 4 computers:

* Old AMD-based PC with USB 2.0 (13.1): works all the time
* Even older AMD-based PC with USB 2.0 (13.2): works as far as tested
* Old Intel-based Laptop with USB 2.0 (13.2): works all the time
* Brand-new Intel-based laptop (Acer) with USB 3.0 (13.2): no go

I have experienced crashes / hangs using: (logfiles later)

* scanimage -L
* xsane

Setting up the scanner using "Yast2-scanner" seems odd. Sometimes it shows the
scanner associated with the suitable "plustek" driver, sometimes it shows as
"not configured". Something is badly wrong.

It appears other people have had issues with USB 3.0 and scanners with the
"xhci_hcd" driver. I tried to blacklist it, but without it I don't have ANY USB
on that laptop.

I have tried the latest default kernel (3.19.something), same issue.

Reproducible: Always

Steps to Reproduce:
1. Attach scanner
2. Try to use it
3. "Bad vibrations"