[GTALUG] Stand-alone scanner for Ubuntu?

[Russell Reiter]

I just searched for your scanner on the SANE list, as well as a cannon
photo printer I'm trying to resurrect from mechanical failure. Your
scanner is not on it, so it looks like Simple Scan hooks into the
kernel on its own.

I also saw a recent post of yours from earlier this year, I forget
what forum, where you had already been exploring the udev
possibilities.

I usually only mess with stock debian and fedora. SElinux gave me a
heck of a fight a couple of kernels ago but I was always able to use
udev or SElinux itself to overcome the policy issues which were
trumping previously working cannon MFP scanner hardware.

Pulseaudio is another problematic implementation and I find that some
spins manage to hook in correctly and some don't, depending on the
kernel.

So, on further reflection, it looks like the most current Ubuntu spins
are hardwired to always use XHCI. This seems to me to be a
transitional problem in upgrading from usb 2.0 to 3.0.

If you are able to change this setting with your MB, you might try
disabling XHCI in bios. This should force the system to EHCI and might
resolve what I'm seeing presented as endpoint block errors in bulk
transfers. Might also resolve your USB serial issues.

Hope this helps.
Russell