Re: USB-> bluetooth adapter problem

[Luke Albers <gtg940r@mail.gatech.edu>]

Marcel Holtmann wrote:

> Hi Luke,
>
>  
>
> > I have a 3com USB bluetooth adapter, that worked for  me at one time, 
> > that I can't get working anymore.
> >
> > The model is 3CREB96B
> >
> > Sometimes it isnt even noticed when I plug it in, but after restarting 
> > hotplug I get this:
> >
> > usb 4-1: new full speed USB device using uhci_hcd and address 2
> > hci_usb_probe: Can't set isoc interface settings
> > usb 4-1: USB disconnect, address 2
> >
> > I don't think that I have removed any options from the kernel that 
> > should cause this, and other USB devices work fine.
> >
> > Can someone please explain this message in more detail (google turns up 
> > very little)?
> >    
>
> try to load the hci_usb driver with "isoc=0". This disables the SCO
> support inside the driver.
>
> Regards
>
> Marcel
>
>
>
>  
Thanks for your reply.

Under "Bluetooth subsystem support" I removed support for "SCO links 
support", and then under "Bluetooth device drivers" I removed SCO 
(voice) support.  What is still left:

HCI USB driver
HCI UART driver
     -UART (H4) protocol support
     -BCSP protocol support
HCI BCM203x USB driver
HCI BlueFRITZ! USB driver
HCI VHCI (Virtual HCI device) driver

I realize that some of these shouldnt be in there, but I don't think 
they are causing problems, either.  Anyway, after I removed the items 
mentioned above, and after plugging in the bluetooth adapter, this is 
what I get:

Oct  9 20:24:17 Obliterus usb 4-1: new full speed USB device using 
uhci_hcd and address 2
Oct  9 20:24:18 Obliterus usb 4-1: USB disconnect, address 2
Oct  9 20:24:18 Obliterus Bluetooth: HCI USB driver ver 2.8
Oct  9 20:24:18 Obliterus usbcore: registered new driver hci_usb

So it looks like it immediately disconnects.  It doesn't show up with 
lspci at all either.  I havent tried using the hci_usb as a module and 
setting isoc=0 yet, but am I correct that removing the SCO stuff from 
the kernel took care of the problem, since I no longer get the same message? 


Thanks
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