Re: [Bluez-users] Hci Reset Problem - Caused by USB Hub

[Andreas Gaufer <Andreas.Gaufer@bluecellnetworks.com>]

On Mon, 31 Jul 2006 20:19:40 +0200
Marcel Holtmann <marcel@holtmann.org> wrote:

> Hi Andreas,
Hi Marcel,

> 
> > further tests proofed that the problem described here are caused by
> > the USB-hub used. It seems to be unable to handle the load and just
> > breaks down. The same operations are working on other (higher quality) hubs.
> > 
> > Watch out for lines like
> > 
> >     usb 1-1: USB disconnect, address 29
> > 
> > in syslog and/or dmesg to check if your problem is similar. Make sure
> > not to mess with real physical disconnects which produce the same log
> > output.
> 
> does this also happens if you load the hci_usb driver with "isoc=0" to
> disable all ISOC transfers.
> 

Confuses me a bit... my kernel (2.6.8.1) says:  kernel: hci_usb: Unknown parameter `isoc'
my modinfo -p hci_usb says: "nothing".

> > I guess the HCI_RESET is issued by bluez after the device comes back on.
> 
> This could be the case.
> 
> Regards
> 
> Marcel
> 
> 

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