[sane-devel] Xerox Workcentre 3225 support?

[Johannes Meixner]

Hello,

On Mar 20 00:17 Bernhard Reiter wrote (excerpt):
> Xerox WorkCentre 3225 connected with USB.

In general when your scanner is connected via USB:

There are currently isues when the xhci kernel module
is used for USB ports where the scanner is connected.

Only "lsusb -t" will tell you what kernel module/driver
is actually used for the USB bus and port where
your scanner is connected to.

Check the "lsusb -t" output if the "xhci_hcd"
USB kernel driver (a.k.a. "USB 3") is used.

Neither the color nor what the port is labeled
on the computer is reliable regarding what
kernel driver is used for the port.

For example my testing machine has 4 USB ports,
two labeled with the "super speed" USB logo (a.k.a. USB 3)
and two labeled with the normal USB logo (a.k.a. USB 2)
but for all 4 ports xhci is used.

Furthermore all USB ports on my testing machine have
same dark color. Also the "super speed" (USB 3) labeled
ports are basically black. Their exact color is "very dark"
but not "100% black" and neither blue (USB 3.0) nor
teal blue (USB 3.1), cf.
https://en.wikipedia.org/wiki/USB#Colors

Only "lsusb -t" output shows what kernel driver is
actually used.

See
https://bugzilla.suse.com/show_bug.cgi?id=955079#c2
and
https://bugzilla.opensuse.org/show_bug.cgi?id=856794
in particular see
https://bugzilla.opensuse.org/show_bug.cgi?id=856794#c50

Regarding "USB 2" versus "USB 3" see also
http://lists.alioth.debian.org/pipermail/sane-devel/2015-December/034197.html
and
http://lists.alioth.debian.org/pipermail/sane-devel/2015-December/034207.html

In particular in
http://lists.alioth.debian.org/pipermail/sane-devel/2015-December/034197.html
there is:
----------------------------------------------------------------
When your scanner is not connected at a USB port where the
kernel module xhci_hcd is used as kernel driver (e.g. when
your scanner is connected at a USB port where the kernel
module uhci_hcd or ehci_hcd is used as kernel driver),
then have a look at "Trouble-Shooting (Debugging)" in
https://en.opensuse.org/SDB:Configuring_Scanners

For example to get USB debugging information
you could use comands (as root) like

export SANE_DEBUG_SANEI_USB=128
scanimage -L
unset SANE_DEBUG_SANEI_USB
----------------------------------------------------------------


> Source RPM  : sane-backends-1.0.23-9.2.3.src.rpm

You may try out if the current sane-backends-1.0.25
perhaps works better.

For direct RPM download of sane-backends-1.0.25
from the OBS "graphics" project, use
http://download.opensuse.org/repositories/graphics/
and select your exact operating system and architecture.

In particular see
https://bugzilla.suse.com/show_bug.cgi?id=856794#c30
and subsequent comments.

The current sane-backends-1.0.25 RPM from the OBS "graphics"
project should no longer have issues with "libgphoto2" on
released openSUSE versions because meanwhile the gphoto2
backend was removed because its usefulness is highly
questionable, but adds many (indirect) build and runtime
dependencies, see the current RPM changelog:

https://build.opensuse.org/package/view_file/graphics/sane-backends/sane-backends.changes?expand=1


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