[sane-devel] scanbd daemon does not load firmware

[Wilhelm]

Hi Ilya,

is there a special reason using the (old) scanbuttond-backends and not 
sane-backends?

If you plugin / poweron the scanner for the first time, who does the 
firmware get loaded in this case?

Am 29.08.2013 03:42, schrieb Ilya Ivanchenko:
> On Wed, 2013-08-28, Wilhelm wrote:
>> Am 28.08.2013 07:11, schrieb Ilya V. Ivanchenko:
>>> I created a neat setup using xinet + scanbd service + scanbd daemon (for
>>> buttons) + sane (client) to use Epson GT-1500 (with ADF) as a workhorse
>>> of a network scanner, with scanner buttons hooked to various jobs.
>>> Everything is working great, except...
>>>
>>> I encountered a problem after the scanner is powered off and then on
>>> again. The buttons service (scanbd daemon) stops reading the buttons and
>>> keeps getting "communication error" in the syslog.
>>
>> that shouldn't happen. Normally, scanbd gets via udev | hal | dbus a
>> device-removed event and then abandones the device until it gets plugged
>> in again.
>
> Good to know that scanbd should manage firmware loading, it answers the
> questions I had. Now it seems we better dig to the root of the
> problem...
>
>
>> So, please show the syslog from beginning of the scanbd log messages and
>> in the situation when the device is removed.
>
> I've pasted syslog snippet with the problem when firmware is not loaded
> (with scanbd debug-level=7) here (device was removed on Aug 28 18:02:28,
> communication error happens on Aug 28 18:03:19):
> http://pastebin.com/BweSr5p2
> (it will expire in 1 month)
>
>>
>> And please: how did you configure / compile, which platform, ...
>
> Ubuntu 12.04LTS on Intel amd64, 1st installed sane and Epson's iscan:
>
> sudo apt-get install sane-utils
> sudo dpkg -i iscan-data_1.23.0-1_all.deb
> sudo dpkg -i iscan_2.29.1-5~usb0.1.ltdl7_amd64.deb
> sudo dpkg -i iscan-plugin-gt-1500_2.2.0-1_amd64.deb
> scanimage -L
> # works
>
> 2nd downloaded scanbd (181-trunk)
> Prepared:
> sudo apt-get install build-essential checkinstall
> sudo apt-get install libconfuse-dev libsane-dev libudev-dev
> sudo apt-get install libconfuse-dev libusb-dev libudev-dev libdbus-1-dev
> dbus libsane-dev
> ## Sane option will only work if sane backend supports reading buttons
> from the scanner (use "scanimage -A" to check):
> # ./configure --prefix= --with-user=saned --with-group=scanner
> ## Use scanbuttond backend (embedded into scanbd):
> ./configure --prefix= --with-user=saned --with-group=scanner
> --enable-scanbuttond
>
> I patched 2 files:
>
> - src/scanbuttond/backends/epson_vphoto.c - added VID/PID 04B8/0133 for
> Epson GT-1500:
>    { 0x04B8, 0x0133, 5 }   // Epson GT-1500, buttons: 1=scan, 2=copy,
> 3=email, 4=pdf, 5=stop
>    ...
>    { "Epson", "GT-1500"}
>
> - src/scanbd/scanbuttond_wrapper.c function scanbtnd_button_name()
> (upped the assert for button count <=4 to <=5 and renamed buttons per
> Epson line above)
>
> BTW - it would be nice if device definitions can name their own buttons
> instead of hard-coded values.That first list with VID/PID/count_buttons
> could contain an array of strings for that.
>
> Then I compiled:
> make
> sudo make install
>
>
> The system configuration involved some editing in /etc/, but I think it
> is not the issue here. Anyway let me know if you need any other
> information.
>
> Regards,
>
> --
> Ilya
>
>


-- 
Wilhelm
w.meier at unix.net