Re: [Bluez-users] Nokia 770 / Sony Ericsson UIQ3 pairing / DUN problems

[Marcel Holtmann <marcel@holtmann.org>]

Hi Neil,

> > my wild guess would be that this phone has a similar problem as my
> > Motorola RAZR V3x. If you use service search attribute request then it
> > can't handle it, because that is not mandatory in the qualification.
> > However it is mandatory to respond, but I think the Bluetooth part of
> > the phone simply crashes at this point and leaves and unmaintained ACL
> > link behind. The reset action on the Nokia 770 will clean this link and
> > give the phone the chance to be able to reset itself. No matter what
> > this phone is broken and it is not on the Linux software side.
> > 
> > Their might be an interop problem with the TI chip against the Philips
> > chip for some strange reason, but you need a protocol analyzer to watch
> > the LMP traffic. It could happen that a internal chip buffer on one side
> > get overflooded by the response to the SDP request. It would be worth to
> > see if you can reproduce this behavior with a CSR chip on normal PC
> > hardware.
> > 
> > Besides that, this phone should support PAN for Internet access and I
> > advise you to actually use it. Then you only have to obtain everything
> > via DHCP and you are good.
>
> Hopefully a firmware upgrade for the phone will fix it, but I won't hold my breath. :(
> 
> The Nokia 770 works perfectly with my former phone - a Sony Ericsson T610, which is quite an old phone and not a Smartphone. Unfortunately I don't have a BT dongle for a PC so can't confirm the behaviour with a CSR chip.

the T610 has an old Ericsson chip in it and these chips work perfectly.
However they no longer state of the art.

Johan, please do the interop testing with a CSR dongle when you get this
phone.

> I'll have a look at PAN but I'm not sure if the Nokia 770 supports this.

You can call pand from an xterm.

> Finally, does anyone have any suggestions how it may be possible to contact the Symbian/SonyEricsson developers and ask them to look at fixing this? Newsgroups, web sites etc? I have a feeling contacting SonyEricsson CS will be a painful and fruitless excercise!

No idea.

Regards

Marcel



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