Re: DBUS StartPeriodicDiscovery

I try to give more info about the problem hoping someone can give me  
a little help.

I compiled the example from : http://wiki.bluez.org/wiki/HOWTO/ 
DiscoveringDevices (the "glib with C" one), used on laptop with  
ubuntu :all ok, on a pc with debian :all ok, on ebox 2300sx with  
debian 4.0 NOTHING (no errors no responses).

- dbus is running
- hcid is running
- if I make "hcitool scan" I can see the nearest bluetooth devices
- In syslog the only messages are "hcid[1794]: name_listener_add(: 
1.1)" and "hcid[1794]: DiscoverDevices requestor at :1.1 exited  
before the operation finished" (I've stopped the program after about  
6/7 minutes of no-output)

I think problem is dbus related but I don't know where to look, I  
also tried "dbus-send --system --type=method_call --print-reply -- 
dest=org.bluez /org/bluez/hci0 org.bluez.Adapter.GetMode" to interact  
with dbus and all works fine so the problem may be in Discovery  
related methods.


Suggestion?
Many thanks


Il giorno 01/apr/08, alle ore 18:59, Fabrizio Guglielmino ha scritto:

> Hi all,
> I've made a software using  DBUS StartPeriodicDiscovery monitoring in
> (almost) realtime bluetooth devices in range.
> I've already used this software with many computer and bluetooth  
> dongles
> without any problem (I've user it on a Asus eee with ubuntu and kernel
> 2.6.22, in a debian with kernel 2.6.23 and so on).
>
> Now I've installed it on a ebox 2300SX
> (http://www.compactpc.com.tw/ebox-2300SX.htm) using a customized  
> debian
> 4.0 to run on compact flash with kernel 2.6.22.
> I have two different problem :
> - When I made a proxy call to StartPeriodicDiscovery sometime i  
> receive
> the response "Invalid argument", but if I made hciconfig hci0 reset
> before running the problem doesn't appear
> - Events generated by StartPeriodicDiscovery (eg.  
> RemoteDeviceFound) are
> never called
>
> I can see the led of the bluetooth dongle blinking whene proxy call to
> StartPeriodicDiscovery  doesn't give error so I think periodic inquiry
> is running (I have not verified with hcidump because at the moment  
> isnt'
> installed on the device and I can't install it )
>
> The big difference from the 2300sx and the other installation is it
> doesn't have math coporcessor so I have compiled the kernel to support
> math emulation but I can't think this is the cause of my problems (why
> bluez should use math coprocessor?). Also in the dmesg of the device I
> found some error about ACPI ("ACPI: Unable to load the System
> Description Tables" and "pnp: PnP ACPI: disabled"), I'm not expert of
> ACPI but I think may cause some problems to usb devices...
>
> Can someone give me a starting point to found the problem?
>
> Many thanks
> Fabrizio
>
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