[sane-devel] Problem with Button of HP ScanJet 6200C Scanner and scanbd

[m. allan noah]

A quick read of the the hp backend code indicates that it attempts to
manage its own buttons. When you start a scan with --button-wait, the
backend blocks and polls the button. I don't think you see the option
from scanbd. The backend would have to be modified.

allan

On Fri, Nov 16, 2012 at 1:03 AM, Thomas Boll
<thomas.alexander.boll at gmail.com> wrote:
> Hello Wilhelm,
>
> it's me again. The output of syslog led me to the config files again and I
> found that I left "lp" as goup in scanbd.conf.
>
> When I changed "goup = lp" to "group = scanner" I can now run:
>
> # scanbd -fd -c /usr/local/etc/scanbd/scanbd.conf
>
> and I see 28 (output says 29) options for my scanner in the output ((see
> output below)).
>
> As far as I understand the next step would be to look which (if any) of the
> options changes when I push the button.
> Is there a way to let scanbd log every option change as I cannot see
> anything happen, when I press the button while scanbd is polling for option
> changes (see output below)?
>
> Also running in monitor mode like:
>
> # scanbd -m -fd -c /usr/local/etc/scanbd/scanbd.conf
>
> or
>
> # scanbd -m -c /usr/local/etc/scanbd/scanbd.conf
>
> do still give me the same output as in my first mail (saned exited with 0).
> But I did not investigate any further in this direction (yet) and assume
> that there are still some rights problems that I can hopefully solve on my
> own.
>
> I know you are busy, but any further help/hints with the options thing would
> be great as I also do not fully understand what is filtered when in
> scanbd.conf actions in the global section and in actions of the hp section
> and how it all fits together (e.g. I connot see any option containg
> "message" so what does "^message.*" filter do?). I read INSTALL but could
> not find any further doku on that.
>
> Thanks again for the support and regards,
> Thomas
>
> root at server:/# scanbd -fd -c /usr/local/etc/scanbd/scanbd.conf
>
> scanbd: debug on: level: 7
> scanbd: dropping privs to uid saned
> scanbd: dropping privs to gid scanner
> scanbd: group scanner has member:
> scanbd: saned
> scanbd: me
> scanbd: drop privileges to gid: 112
> scanbd: Running as effective gid 112
> scanbd: drop privileges to uid: 103
> scanbd: Running as effective uid 103
> scanbd: dbus_init
>
> scanbd: dbus match type='signal',interface='org.freedesktop.Hal.Manager'
> scanbd: sane version 1.0
> scanbd: Scanning for local-only devices
> scanbd: found device: hp:libusb:001:013 Hewlett-Packard ScanJet 62x0C
> flatbed scanner
> scanbd: start_sane_threads
> scanbd: Starting poll thread for hp:libusb:001:013
> scanbd: Thread started for device hp:libusb:001:013
> scanbd: start dbus thread
> scanbd: udev init
> scanbd: timeout: 500 ms
> scanbd: sane_poll
> scanbd: Iteration on dbus call
> scanbd: found 29 options for device hp:libusb:001:013
> scanbd: sane_find_matching_options
>
> scanbd: found 5 actions in section (null)
> scanbd: checking action scan with filter: ^scan.*
> scanbd: option[1]  for device hp:libusb:001:013 not of type
> BOOL|INT|FIXED|STRING|BUTTON. Skipping
> scanbd: found active option[2] preview (type: 0) for device
> hp:libusb:001:013
> scanbd: found active option[3] mode (type: 3) for device hp:libusb:001:013
> scanbd: found active option[4] resolution (type: 1) for device
> hp:libusb:001:013
> scanbd: option[5]  for device hp:libusb:001:013 not of type
> BOOL|INT|FIXED|STRING|BUTTON. Skipping
> scanbd: found active option[6] brightness (type: 1) for device
> hp:libusb:001:013
> scanbd: found active option[7] contrast (type: 1) for device
> hp:libusb:001:013
> scanbd: found active option[8] auto-threshold (type: 0) for device
> hp:libusb:001:013
> scanbd: option[9]  for device hp:libusb:001:013 not of type
> BOOL|INT|FIXED|STRING|BUTTON. Skipping
> scanbd: found active option[10] custom-gamma (type: 0) for device
> hp:libusb:001:013
> scanbd: found active option[12] matrix-type (type: 3) for device
> hp:libusb:001:013
> scanbd: found active option[15] speed (type: 3) for device hp:libusb:001:013
> scanbd: found active option[18] source (type: 3) for device
> hp:libusb:001:013
> scanbd: found active option[19] button-wait (type: 0) for device
> hp:libusb:001:013
> scanbd: found active option[20] lamp-off (type: 4) for device
> hp:libusb:001:013
> scanbd: found active option[21] change-document (type: 4) for device
> hp:libusb:001:013
> scanbd: option[22]  for device hp:libusb:001:013 not of type
> BOOL|INT|FIXED|STRING|BUTTON. Skipping
> scanbd: found active option[23] tl-x (type: 2) for device hp:libusb:001:013
> scanbd: found active option[24] tl-y (type: 2) for device hp:libusb:001:013
> scanbd: found active option[25] br-x (type: 2) for device hp:libusb:001:013
> scanbd: found active option[26] br-y (type: 2) for device hp:libusb:001:013
> scanbd: found active option[27] mirror-horizontal (type: 3) for device
> hp:libusb:001:013
> scanbd: found active option[28] mirror-vertical (type: 3) for device
> hp:libusb:001:013
>
> scanbd: checking action email with filter: ^email$
> scanbd: option[1]  for device hp:libusb:001:013 not of type
> BOOL|INT|FIXED|STRING|BUTTON. Skipping
> scanbd: found active option[2] preview (type: 0) for device
> hp:libusb:001:013
> scanbd: found active option[3] mode (type: 3) for device hp:libusb:001:013
> ...
> scanbd: found active option[25] br-x (type: 2) for device hp:libusb:001:013
> scanbd: found active option[26] br-y (type: 2) for device hp:libusb:001:013
> scanbd: found active option[27] mirror-horizontal (type: 3) for device
> hp:libusb:001:013
> scanbd: found active option[28] mirror-vertical (type: 3) for device
> hp:libusb:001:013
> scanbd: sane_find_matching_functions
> scanbd: no matching functions in section hp
> scanbd: timeout: 500 ms
> scanbd: Start the polling for device hp:libusb:001:013
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> scanbd: Iteration on dbus call
> scanbd: polling thread for hp:libusb:001:013 cancellation point
> scanbd: polling device hp:libusb:001:013
> scanbd: get_sane_option_value
> scanbd: checking option preview number 2 (0) for device hp:libusb:001:013:
> value: 0
> ^Cscanbd: sig_term/int_handler called with signal 2
> scanbd: stop_sane_threads
> scanbd: stopping poll thread for device hp:libusb:001:013
> scanbd: waiting for poll thread for device hp:libusb:001:013
> scanbd: sane_thread_cleanup_mutex
> scanbd: closing device hp:libusb:001:013
> scanbd: freeing opt ressources for device hp:libusb:001:013 thread
> scanbd: freeing funtion ressources for device hp:libusb:001:013 thread
> scanbd: stop dbus thread
> scanbd: join dbus thread
> scanbd: stop udev thread
> scanbd: cleanup device handler
> scanbd: join udev thread
> scanbd: close udev monitor
> scanbd: close udev
> scanbd: exiting scanbd
>
>
> --
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