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Subject: Re: [Bluez-users] Multiple RFCOMM disconnection problem
From: Marcel Holtmann <marcel@holtmann.org>
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Date: Fri, 25 Nov 2005 19:44:39 +0100

Hi Augustin,

> When I try to connect more than 2 RFCOMM connections (on different
> ports), everything works fine until I disconnect the last connection:
> 
> In other words, I can create multiple RFCOMM connections on different
> ports, but when I try and disconnect, the computer freezes (on fedora 4
> kernel 2.6.11) or just displays a segfault and I can't kill the process
> (o Knoppix kernel 2.6.14).
> 
> I tried with different USB dongles, updated to the last release of Bluez
> (rfcomm version 2.22) and nothing changes...
> 
> This is a very strange problem... and only ocurrs when I try to connect
> to more then 2 BT devices.
> 
> Here's what I do:
> I have two computers, each one with one dongle. On the listener side I
> run on different terminals:
> 
> >rfcomm listen 1 1
> >rfcomm listen 2 2
> >rfcomm listen 3 3
> and so on...
> 
> on the client side I run
> 
> >rfcomm connect 1 <bdaddress> 1
> >rfcomm connect 2 <bdaddress> 2
> >rfcomm connect 3 <bdaddress> 3
> 
> everything works fine until I disconnect (CTRL+C from the client side)
> the 3rd connection. I tried with more than 3 connections and the system
> freezes when I disconnect the last connection.
> 
> I'd really appreciate any feedback on this problem... I am at a lost
> here... Has this ever happened to you?

I need some details of your kernel. Send in "lsmod" and "modinfo rfcomm"
and also "uname -a". Do you see an oops in the logs?

Regards

Marcel




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