Re: [Bluez-users] 3 or more BT dongles over 1 USB-2.0 4-port HUB

[petr@palacky.net]

Hi Marcel,

thank you for your tip.

I tried loading hci_usb with option isoc=3D0, but still nothing happens.
I don't think if this is question for USB Guys, because other devices eg.
printer, mouse, keyboard, flash-disk etc. works fine and all together
attached into one USB HUB.
I think this is problem with any component from bluez stack...

BR
Petr

Dne 11 Z=E1=F8=ED 2006, 20:10, Marcel Holtmann napsal(a):
> Hi Petr,
>
>
>> i have problem with three (and more) USB BT dongles (all are the same,
>> CSR-based) and 4-port USB-2.0 HUB.
>>
>>
>> When i attach one USB dongle alone, everything is good (hci0 is up and
>> running). When i attach the second dongle (after the first), still is
>> everything OK (hci0 and hci1 are up and running). But when i attach
>> third (or fourth) dongle, this does not work.
>>
>> I tried attaching all dongles differently but every time the third (or
>> fourth) dongle is not OK and dmesg says: #dmesg
>> hci_usb_intr_rx_submit: hci2 intr rx submit failed urb cd55b674 err -28
>>
>
> try loading the hci_usb driver with the isoc=3D0 option. This maybe helps,
> but it can also be a general problem with your USB root hub. In that case
> you have to check with the USB guys, because this is not Bluetooth
> specific.
>
> Regards
>
>
> Marcel
>
>
>
>
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