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: Mon, 28 Nov 2005 10:00:03 +0100

Hi Robert,

> > > > Check with "hcidump -X -V" what happens.
> > > 
> > > I will, but not this night... (-:
> > > 
> > > > > The switch between the modes is done with a "set report mode feature"
> > > > > call. 
> > > > 
> > > > Question is what is default?
> > > 
> > > HID. Because the wacom people told me and addionally the tablet actually
> > > works with bluez. - But it does not send packets until the mouse/pen got
> > > moved at least 6 "pixel" in one direction. (See my first email in this
> > > thread). That means: I move the mouse, but hcidump is not showing
> > > anything. - I have to move it some millimeters before it does see
> > > something...
> > 
> > If hcidump is showing nothing, then the device is not sending any report
> > at all. This means the device is at fault if it is jumpy.
> 
> Of course. That's clear. - But still believe that it's possible to
> influence it in this behaviour.

maybe, but then this is Wacom specific.

> > > > > > You wrote something about a switch. Is there a difference in the SDP
> > > > > > records if you choose a different setting?
> > > > > 
> > > > > I think I was talking about the two modes mentioned above. As hardware
> > > > > there are only buttons: two "mouse buttons", a power button and a
> > > > > "pairing" button.
> > > > 
> > > > What does the pairing button do? It makes the device discoverable and
> > > > pairable, right?
> > > 
> > > I think so. It is already a "long time" ago, because some things did
> > > work with the pairing auth/enc switched on, but it did not end up
> > > working (to the level it does without)...
> > 
> > Don't even think about switching into security mode 3. Use the -E switch
> > of hidd instead.
> 
> Man page and hidd --help output don't say it: what does the -E switch?

This is a lack in the documentation. The -E switch works the same as in
pand and dund. It establishes encryption (and authentication) for every
keyboard device.

Regards

Marcel


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