what gives a clear scan with Linux?

[Michael Havens]

I guess I was thinking to deep. huh?
but I didn't remove any software....

On Tue, Dec 22, 2015 at 4:35 PM, Brian Cluff <brian at snaptek.com> wrote:

> 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 at gmail.com
>> <mailto:bmike1 at 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 at gmail.com
>>     <mailto:bmike1 at gmail.com>> wrote:
>>
>>         I then tried:
>>
>>           scanimage>test.scn
>>           scanimage: no SANE devices found
>>
>>
>>
>>
>>     --
>>     :-)~MIKE~(-:
>>
>>
>>
>>
>> --
>> :-)~MIKE~(-:
>>
>>
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-- 
:-)~MIKE~(-:
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