Re: [Bluez-users] Connection dropped or cannot connect

[Richard Cox <conardcox@earthlink.net>]

On Saturday 10 April 2004 05:09 pm, Marcel Holtmann wrote:
> Hi Richard,
>
> > Good news and bad news,
> > 	Good news is that i've got my iPAQ pan connection working very well, but
> > am having a very similar problem to the once described here.  Here's what
> > happens in the log:
> >
> > Apr 10 16:31:45 furrball kernel: hci_acl_tx_to: hci0 ACL tx timeout
> > Apr 10 16:31:45 furrball kernel: hci_acl_tx_to: hci0 killing stalled ACL
> > connection B6:CB:5A:16:05:00
> > Apr 10 16:31:45 furrball kernel: pan0: port 1(bnep0) entering disabled
> > state Apr 10 16:31:45 furrball kernel: pan0: port 1(bnep0) entering
> > disabled state Apr 10 16:31:45 furrball kernel: device bnep0 left
> > promiscuous mode
> >
> > After that happens, the only thing that will fix it is to unplug and
> > re-insert the USB dongle.  hciconfig just returns this when I try a
> > reset:
> >
> > [furrball:~]# hciconfig hci0 reset
> > Can't init device hci0. Connection timed out(110)
> >
> > I read this response and turned off encrypt and authentication in
> > hci.conf, but it has made no noticable difference.  This always happens
> > after a little over 1 or 2 Mb of data xfer.
>
> this sound to me like the Transilica chip in the USB-220 is buggy and
> that it has a problem when sending frames with multiple size of bulk max
> packet. You can try to add "#define CONFIG_BT_HCIUSB_ZERO_PACKET" at the
> top of hci_usb.c and try again.
>
> > PS:  I'm using the latest bluez download from the download section, i'm
> > running a vanilla 2.4.25 kernel on gentoo linux.  I've got a Belkin
> > F8T003 USB adapter too.
>
> Do this adapter have the same problem? Is it CSR based?
>
> Regards
>
> Marcel

" Do this adapter have the same problem? Is it CSR based?"

Yes, according to the bluez hardware compatibilty list 
(http://www.holtmann.org/linux/bluetooth/devices.html) it says:
 
Belkin F8T003 USB Adapter  	CSR  	1.1  	hci_usb  	working  	Nayib Kiuhan

I'll certainly try defining that macro you listed above and see what happens.

Thanks Marcel.

Regards,

Richard