problem with /dev/rfcomm0

Priyadarsan Roy priyadarsanroy at
Mon Jul 17 06:42:50 UTC 2006

Riccardo Veraldi wrote:
> Hello,
> I haev Kubuntu 6.06
> I configured it to connect via UMTS/GPRS using bluetooth
> device.
> Actually I think I did everything correctly but when I start pppd
> or gnme-ppp or kppp I have the following error
> Failed to open /dev/rfcomm0: Connection refused

Hi Rick,

I had the same problem. My problem was that the remote bluetooth device 
was not binding to my laptop automatically. I did a manual bind and all 
was working. In your case you can try

$ sudo rfcomm bind  0 00:12:37:9D:3C:53 1

and then try using kpp. For me it was not working with kpp too. I think 
it was user rights problem. Then I got it to working using wvdial. My 
wvdial.conf looks like this

# Start wvdial.conf file
Modem = /dev/rfcomm0
Baud = 115200
SetVolume = 0
Dial Command = ATDT
Init1 = ATE1
Init2 = AT+CGDCONT=1,"IP","WWW" # This is specific to my Hutch GPRS 
connection here in India
FlowControl = CRTSCTS

[Dialer GPRS]
Username = user
Password = user
Phone = *99***1#
Stupid Mode = 1
Inherits = BluetoothMobile
# End wvdial.conf file

And then I used to do $sudo wvdial GPRS. And all the things are working. 
So when I am home I can use my GPRS to log on to the net. Also make sure 
you pair your motorolla device to the computer before you do all this.

Hope this helps,


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