[Bluez-users] R: ARM-linux and multiple USB dongles

[Bluez-users] R: ARM-linux and multiple USB dongles

[Baschieri Francesco]

Thanks Marcel,
I have switched to 2.6 and the dongles now are working. I have been able to=
 plug up to 8 BT dongles on the system using two usb hubs.

Sometimes, though, we have the same problem. It seems related to the order =
in which we install the dongles. Maybe there's something wrong with the usb=
 driver...


-----Messaggio originale-----
Da: bluez-users-bounces@lists.sourceforge.net [mailto:bluez-users-bounces@l=
ists.sourceforge.net] Per conto di Marcel Holtmann
Inviato: mercoled=EC 26 luglio 2006 9.26
A: BlueZ users
Oggetto: Re: [Bluez-users] ARM-linux and multiple USB dongles


Hi Francesco,

> I'm facing this problem on ARM-linux (2.4.26) and 2 USB dongles on a =

> TS-7200 SBC by technologic systems.
>  =

> When I plug the 1st dongle, it is correctly initialized and it works =

> okay. When I plug the 2nd one, it is regognized but I can't get it =

> working: hciconfig hc1 up returns timeout(110).
>  =

> If I unplug hci0 (the first dongle) then hci1 starts working.
>  =

> I have been trying this with different dongles & different chipsets =

> but I still get the same results. On the development machine (i86 with =

> same Kernel version) everything works ok.
>  =

> At the beginning I thought this might be some problem with USB support =

> on the board. But I have been able to operate up to 7 simultaneous USB =

> devices on the board (not bluetooth) and they work ok.
>  =

> Are there any known issues about multiple devices and ARM?

no, they are working perfectly. Why don't you try to use a recent 2.6 kerne=
l on your system. Sticking to 2.4 is not a good idea at all.

Regards

Marcel




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Re: [Bluez-users] R: ARM-linux and multiple USB dongles

[Marcel Holtmann]

Hi Francesco,

> I have switched to 2.6 and the dongles now are working. I have been able to plug up to 8 BT dongles on the system using two usb hubs.
> 
> Sometimes, though, we have the same problem. It seems related to the order in which we install the dongles. Maybe there's something wrong with the usb driver...

if you don't need the SCO support then you can load hci_usb with isoc=0
to disable the ISOC transfers.

Regards

Marcel



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