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From: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Date: Thu, 18 Aug 2011 17:12:31 -0300
Message-ID: <CAMOw1v6YJJ64DCD9pnPyZGYDOQep3qWhuiWC+qaR=_+3ichQBA@mail.gmail.com>
Subject: Re: need help with bluez pairing/connecting device
To: Ram Bhamidipaty <rambham@gmail.com>
Cc: linux-bluetooth <linux-bluetooth@vger.kernel.org>
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On Thu, Aug 18, 2011 at 2:53 PM, Ram Bhamidipaty <rambham@gmail.com> wrote:
> I am writing some new software that talks to bluez-4.96.
>
> I have some how gotten a device into a weird state. When I make
> a dbus call to org.bluez.Adapter.GetProperties
> I see my target device in the list:
>
> ? ? ? dict entry(
> ? ? ? ? string "Devices"
> ? ? ? ? variant ? ? ? ? ? ? array [
> ? ? ? ? ? ? ? object path "/org/bluez/8090/hci0/dev_00_22_48_85_50_1D"
> ? ? ? ? ? ?]
> ? ? ?)
>
>
> When a device is listed here - what does it mean? I am guessing that
> at this point the pairing process is over. Or does it mean something else?

It's the list of devices already paired. So, if you paired anytime
before, the device will appear in this list.


>
> However the device is not yet connected. So I next try to connect:
>
> dbus-send --system --type=method_call --print-reply --dest=org.bluez
> /org/bluez/8090/hci0/dev_00_22_48_85_50_1D org.bluez.Input.Connect
>
> This fails with a cryptic:
>
> Error org.bluez.Error.Failed: Host is down (112)

It's because the other host is down (sic.). The fact that this path
exists doesn't means the device is around, it just means that some
time ago you paired it with this adapter. Turn the devices on and try
again.


Lucas De Marchi