Subject: Re: [Bluez-devel] Re: Jumpy cursor with Wacom Graphire Bluetooth
From: Marcel Holtmann <marcel@holtmann.org>
To: bluez-devel@lists.sourceforge.net
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Date: Sun, 27 Nov 2005 22:56:09 +0100

Hi Robert,

> > maybe the HID inside the Wacom is broken and needs a special quirk. This
> > wouldn't be the first time. However also the Linux HID code can be at
> > fault here. You still haven't send in enough information about that
> > device to tell.
> > 
> > Use "hcitool info..." and "sdptool browse --raw" to get some more
> > information about the device.
> 
> panorama:/etc/udev# sdptool browse --raw
> Inquiring ...
> 
> 
> Should there be something? ("local" or the tablet address do the same:
> empty)

put in the address of the tablet. I need to see the full record.

> My questions were:
>  -Who is making the connectinon? (hidp kernel module?)

The tablet is requesting the connection and hidd answers it and then
hands over the socket descriptors to the hidp kernel module to run the
HIDP on it.

>  -Who can/could influence it's outcome? (hidd userspace daemon? Plays
>   hcid an important role?)

None of them has anything to do with it. The only important things are
to enable rswitch and sniff in the link policy.

>  -Has the latency thing something to do with it?

Maybe, but I don't think so.

>  -Which spec should I first dig into - Bluetooth or HID?

I think it is all about HID, because the Bluetooth part is quite clear
and simple.

Regards

Marcel


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