From: Luke Albers <gtg940r@mail.gatech.edu>
To: linux-kernel-Mailing-list <linux-kernel@vger.kernel.org>
Subject: Re: USB-> bluetooth adapter problem
Date: Sun, 09 Oct 2005 20:43:12 -0400 [thread overview]
Message-ID: <4349B920.4090105@mail.gatech.edu> (raw)
In-Reply-To: <1128898123.19569.28.camel@blade>
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
next prev parent reply other threads:[~2005-10-10 0:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-09 22:31 USB-> bluetooth adapter problem Luke Albers
2005-10-09 22:48 ` Marcel Holtmann
2005-10-10 0:43 ` Luke Albers [this message]
2005-10-10 3:25 ` Marcel Holtmann
2005-10-20 0:04 ` Luke Albers
2005-10-20 8:02 ` Marcel Holtmann
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