Hi everybody, here's my problem:
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?
Thanks very much for your time!
Agustin Fusaro
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Hi Marcel,
Here is the data you requested:
lsmod:
Module Size Used by
parport_pc 28933 1
lp 13001 0
parport 40585 2 parport_pc,lp
autofs4 29253 2
rfcomm 42333 0
l2cap 30661 5 rfcomm
bluetooth 56133 6 rfcomm,l2cap
sunrpc 167813 1
dm_mod 58101 0
video 15941 0
button 6609 0
battery 9413 0
ac 4805 0
md5 4033 1
ipv6 268097 8
uhci_hcd 35152 0
ehci_hcd 41037 0
i2c_viapro 8017 0
i2c_core 21569 1 i2c_viapro
snd_via82xx 30081 1
gameport 18633 1 snd_via82xx
snd_ac97_codec 75961 1 snd_via82xx
snd_seq_dummy 3653 0
snd_seq_oss 37057 0
snd_seq_midi_event 9153 1 snd_seq_oss
snd_seq 62289 5
snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_pcm_oss 51185 0
snd_mixer_oss 17857 2 snd_pcm_oss
snd_pcm 100169 3 snd_via82xx,snd_ac97_codec,snd_pcm_oss
snd_timer 33605 2 snd_seq,snd_pcm
snd_page_alloc 9669 2 snd_via82xx,snd_pcm
snd_mpu401_uart 10049 1 snd_via82xx
snd_rawmidi 30305 1 snd_mpu401_uart
snd_seq_device 8781 4
snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidisnd
57157 11
snd_via82xx,snd_ac97_codec,snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
soundcore 10913 2 snd
via_rhine 28361 0
mii 5441 1 via_rhine
floppy 65269 0
ext3 132553 1
jbd 86233 1 ext3
modinfo rfcomm:
filename: /lib/modules/2.6.11-1.1369_FC4/kernel/net/bluetooth/rfcomm/rfcomm.ko
author: Maxim Krasnyansky <[email protected]>, Marcel Holtmann
<[email protected]>
description: Bluetooth RFCOMM ver 1.5
version: 1.5
license: GPL
alias: bt-proto-3
vermagic: 2.6.11-1.1369_FC4 686 REGPARM 4KSTACKS gcc-4.0
depends: bluetooth,l2cap
srcversion: 0F01C84C05D0CC738907E51
uname -a
Linux lab04l 2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT 2005 i686
athlon i386 GNU/Linux
This data is for the Fedora 4 distribution. I downloaded and installed
the latest BlueZ library and utilities.
Thanks very much for your time
Regards,
Agustin
On Fri, 2005-11-25 at 19:44 +0100, Marcel Holtmann wrote:
> 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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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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