The user needs to be part of the scanner group in order for the scanner to be found.

I would guess that while you were adding and removing scanner software, one of the the packages removed the scanner group completely and when you shutdown the machine it forgot that you were in the group.

Try adding the scanner group to your user and then log out and back in again and it should start working

Brian Cluff

On 12/22/2015 12:29 PM, Michael Havens wrote:

but why did it work before? ,I just shut down, started windows, and then
restarted into linux!!!!

On Tue, Dec 22, 2015 at 2:28 PM, Michael Havens <bmike1@gmail.com

<mailto:bmike1@gmail.com>> wrote:

    I found the problem. It seems to be a permissions error!

    man sane-usb
    This is a short HOWTO-like section. For the full details, read the fol‐
            lowing  sections.  The  goal  of  this  section  is  to get
    the scanner
            detected by sane-find-scanner(1).

            Run sane-find-scanner. If it lists your scanner with the
    correct vendor
            and  product  ids, you are done. See section SANE ISSUES for
    details on
            how to go on.

            sane-find-scanner doesn't list your scanner? Does it work as
      root?  If
            yes, there is a permission issue. See the LIBUSB section for
    details.

            Nothing  is found even as root? Check that your kernel
    supports USB and
            that libusb is installed (see section LIBUSB).

    <edit>
    LIBUSB
            SANE  can  only  use libusb 0.1.6 or newer. It needs to be
    installed at
            build-time. Modern Linux distributions and other operating
    systems come
            with libusb.

            Libusb  can  only access your scanner if it's not claimed by
    the kernel
            scanner driver. If you want to use libusb,  unload  the
      kernel  driver
            (e.g. rmmod scanner under Linux) or disable the driver when
    compiling a
            new kernel. For Linux, your kernel needs support for the USB
    filesystem
            (usbfs). For kernels older than 2.4.19, replace "usbfs" with
    "usbdevfs"
            because the name has changed. This filesystem must be
      mounted.  That's
            done  automatically  at  boot  time, if /etc/fstab contains
    a line like
            this:

                   none /proc/bus/usb usbfs defaults  0  0

            The permissions for the device files used by libusb  must
      be  adjusted
            for  user  access. Otherwise only root can use SANE devices.
    For Linux,
            the devices are located in /proc/bus/usb/ or in
      /dev/bus/usb,  if  you
            use  udev.  There  are directories named e.g. "001" (the bus
    name) con‐
            taining files "001", "002" etc. (the device files).  The
      right  device
            files can be found out by running scanimage -L as root.
    Setting permis‐
            sions with "chmod" is not permanent, however. They will be
    reset  after
            reboot or replugging the scanner.

    Okay, do I need to make it look like:

                     none /proc/bus/usb usbfs defaults  6   6

    or what do I need to do?

    On Tue, Dec 22, 2015 at 2:10 PM, Michael Havens <bmike1@gmail.com

    <mailto:bmike1@gmail.com>> wrote:

        I then tried:

          scanimage>test.scn
          scanimage: no SANE devices found




    --
    :-)~MIKE~(-:




--
:-)~MIKE~(-:


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