Scan does not work on either F-16 box -

[Bob Goodwin]

On 24/02/12 17:44, ny6p01 at gmail.com wrote:
> On Fri, Feb 24, 2012 at 05:33:44AM -0500, Bob Goodwin wrote:
>> On 24/02/12 02:25, Michael Schwendt wrote:
>>> yum -y install sane-backends-drivers-scanners
>>          Did that, still no device found!
>>
>>          However for the first time ever I ignored the warning not to run
>>          as root and xsane found the Canon LIDE-110 scanner and copied as
>>          expected! A permissions problem?
>>
>>          That was on this computer, box6.
>>
>>          Box9 showed "sane-backends-drivers-scanners already installed?"
>>
>>          Box9, as root, found the HP-5370 scanner and copied a page as
>>          expected.
>>
>>          As a matter of interest, my installs are from the XFCE spin on a
>>          flash drive. I then add the applications I want via yum mostly.
>>          Don't know why this computer was different from the other but I
>>          may have inadvertently removed something?
>>
>>          Next to find the permissions problem but this is good progress
>>          for this early hour when I should be sleeping.
>>
>>          Thanks much for your expert help.
>>
>>          Bob
>>
>>
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> There is a simple way to overcome this limitation. Find out what bus the
> printer/scanner is on with lsusb. Then go into /dev/bus/usb and change the
> permissions of the bus/device that you need access to.
>
> Terry
>

        That's what I thought too.

        [bobg at box6 ~]$ lsusb
        Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
        Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
        Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
        Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
        Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
        Bus 001 Device 012: ID 04a9:1909 Canon, Inc. CanoScan LiDE 110
        Bus 002 Device 002: ID 046d:c408 Logitech, Inc. Marble Mouse
        (4-button)

        So I tried changing permissions and then owner.

        [root at box6 usb]# ll
        total 0
        drwxrwxr-x. 2 bobg root 80 Feb 24 11:34 001
        drwxr-xr-x. 2 root root 80 Feb 24 10:58 002
        drwxr-xr-x. 2 root root 60 Feb 24 04:09 003
        drwxr-xr-x. 2 root root 60 Feb 24 04:09 004
        drwxr-xr-x. 2 root root 60 Feb 24 04:09 005

        There's still "no device available" for user bobg.

        Root works, not user.

        And even if that did work the device changes whenever I plug in
        the scanner, not sure what effect that will have?

        Bob